| Base | Representation |
|---|---|
| bin | 101000000000100… |
| … | …0000000011011000 |
| 3 | 10110120000222222200 |
| 4 | 1100001000003120 |
| 5 | 10222131032030 |
| 6 | 341113050200 |
| 7 | 45160356123 |
| oct | 12001000330 |
| 9 | 3416028880 |
| 10 | 1342439640 |
| 11 | 629854853 |
| 12 | 3156b6960 |
| 13 | 1851770a9 |
| 14 | ca40b3ba |
| 15 | 7ccc4d60 |
| hex | 500400d8 |
1342439640 has 96 divisors (see below), whose sum is σ = 4403084400. Its totient is φ = 354689280.
The previous prime is 1342439639. The next prime is 1342439641. The reversal of 1342439640 is 469342431.
It is a happy number.
1342439640 is a `hidden beast` number, since 1 + 3 + 4 + 2 + 4 + 3 + 9 + 640 = 666.
It is an interprime number because it is at equal distance from previous prime (1342439639) and next prime (1342439641).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 1342439595 and 1342439604.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1342439641) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22135 + ... + 56345.
Almost surely, 21342439640 is an apocalyptic number.
1342439640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1342439640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2201542200).
1342439640 is an abundant number, since it is smaller than the sum of its proper divisors (3060644760).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1342439640 is a wasteful number, since it uses less digits than its factorization.
1342439640 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 34337 (or 34330 counting only the distinct ones).
The product of its (nonzero) digits is 62208, while the sum is 36.
The square root of 1342439640 is about 36639.3182250980. The cubic root of 1342439640 is about 1103.1424302767.
The spelling of 1342439640 in words is "one billion, three hundred forty-two million, four hundred thirty-nine thousand, six hundred forty".
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