402125012 has 6 divisors (see below), whose sum is σ = 703718778. Its totient is φ = 201062504.

The previous prime is 402124999. The next prime is 402125023. The reversal of 402125012 is 210521204.

It can be written as a sum of positive squares in only one way, i.e., 222725776 + 179399236 = 14924^2 + 13394^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50265623 + ... + 50265630.

It is an arithmetic number, because the mean of its divisors is an integer number (117286463).

Almost surely, 2^402125012 is an apocalyptic number.

It is an amenable number.

402125012 is a deficient number, since it is larger than the sum of its proper divisors (301593766).

402125012 is a wasteful number, since it uses less digits than its factorization.

402125012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100531257 (or 100531255 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 402125012 is about 20053.0549293618. The cubic root of 402125012 is about 738.1087645066.

Adding to 402125012 its reverse (210521204), we get a palindrome (612646216).

The spelling of 402125012 in words is "four hundred two million, one hundred twenty-five thousand, twelve".