| Base | Representation |
|---|---|
| bin | 101010010110111… |
| … | …1100101110001100 |
| 3 | 10200001111010001111 |
| 4 | 1110231330232030 |
| 5 | 10402330100330 |
| 6 | 353012021404 |
| 7 | 50136055102 |
| oct | 12455745614 |
| 9 | 3601433044 |
| 10 | 1421331340 |
| 11 | 66a339300 |
| 12 | 338001864 |
| 13 | 198609b80 |
| 14 | d6aa5c72 |
| 15 | 84baa32a |
| hex | 54b7cb8c |
1421331340 has 72 divisors (see below), whose sum is σ = 3533256720. Its totient is φ = 477079680.
The previous prime is 1421331319. The next prime is 1421331361. The reversal of 1421331340 is 431331241.
It is an interprime number because it is at equal distance from previous prime (1421331319) and next prime (1421331361).
It is a Harshad number since it is a multiple of its sum of digits (22).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8871 + ... + 54049.
It is an arithmetic number, because the mean of its divisors is an integer number (49073010).
Almost surely, 21421331340 is an apocalyptic number.
1421331340 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 1421331340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1766628360).
1421331340 is an abundant number, since it is smaller than the sum of its proper divisors (2111925380).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1421331340 is a wasteful number, since it uses less digits than its factorization.
1421331340 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 45223 (or 45210 counting only the distinct ones).
The product of its (nonzero) digits is 864, while the sum is 22.
The square root of 1421331340 is about 37700.5482718753. The cubic root of 1421331340 is about 1124.3420257833.
Adding to 1421331340 its reverse (431331241), we get a palindrome (1852662581).
Subtracting from 1421331340 its reverse (431331241), we obtain a palindrome (990000099).
The spelling of 1421331340 in words is "one billion, four hundred twenty-one million, three hundred thirty-one thousand, three hundred forty".
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