405204841252 has 12 divisors (see below), whose sum is σ = 728273566300. Its totient is φ = 197126679456.

The previous prime is 405204841219. The next prime is 405204841253. The reversal of 405204841252 is 252148402504.

It can be written as a sum of positive squares in 2 ways, for example, as 187128917056 + 218075924196 = 432584^2 + 466986^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (405204841253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1368935127 + ... + 1368935422.

Almost surely, 2^405204841252 is an apocalyptic number.

It is an amenable number.

405204841252 is a deficient number, since it is larger than the sum of its proper divisors (323068725048).

405204841252 is a wasteful number, since it uses less digits than its factorization.

405204841252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737870590 (or 2737870588 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 37.

The spelling of 405204841252 in words is "four hundred five billion, two hundred four million, eight hundred forty-one thousand, two hundred fifty-two".