| Base | Representation |
|---|---|
| bin | 100101000001100… |
| … | …0010011101111000 |
| 3 | 10012120121220122202 |
| 4 | 1022003002131320 |
| 5 | 10021012414040 |
| 6 | 323135005332 |
| 7 | 42533315363 |
| oct | 11203023570 |
| 9 | 3176556582 |
| 10 | 1242310520 |
| 11 | 588285310 |
| 12 | 2a8069848 |
| 13 | 16a4b98a9 |
| 14 | badc50da |
| 15 | 740e7015 |
| hex | 4a0c2778 |
1242310520 has 128 divisors (see below), whose sum is σ = 3160244160. Its totient is φ = 435548160.
The previous prime is 1242310469. The next prime is 1242310529. The reversal of 1242310520 is 250132421.
It is a super-4 number, since 4×12423105204 (a number of 37 digits) contains 4444 as substring.
It is a Harshad number since it is a multiple of its sum of digits (20).
It is a junction number, because it is equal to n+sod(n) for n = 1242310492 and 1242310501.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1242310529) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2230082 + ... + 2230638.
Almost surely, 21242310520 is an apocalyptic number.
1242310520 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 1242310520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1580122080).
1242310520 is an abundant number, since it is smaller than the sum of its proper divisors (1917933640).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1242310520 is a wasteful number, since it uses less digits than its factorization.
1242310520 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 753 (or 749 counting only the distinct ones).
The product of its (nonzero) digits is 480, while the sum is 20.
The square root of 1242310520 is about 35246.4256343817. The cubic root of 1242310520 is about 1075.0039358068.
Adding to 1242310520 its reverse (250132421), we get a palindrome (1492442941).
The spelling of 1242310520 in words is "one billion, two hundred forty-two million, three hundred ten thousand, five hundred twenty".
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