252104242440 has 64 divisors (see below), whose sum is σ = 800801717760. Its totient is φ = 63273221120.

The previous prime is 252104242409. The next prime is 252104242459. The reversal of 252104242440 is 44242401252.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 252104242398 and 252104242407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61788216 + ... + 61792295.

It is an arithmetic number, because the mean of its divisors is an integer number (12512526840).

Almost surely, 2^252104242440 is an apocalyptic number.

252104242440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252104242440 is an abundant number, since it is smaller than the sum of its proper divisors (548697475320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252104242440 is a wasteful number, since it uses less digits than its factorization.

252104242440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123580542 (or 123580538 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 30.

Adding to 252104242440 its reverse (44242401252), we get a palindrome (296346643692).

The spelling of 252104242440 in words is "two hundred fifty-two billion, one hundred four million, two hundred forty-two thousand, four hundred forty".