400125032 has 16 divisors (see below), whose sum is σ = 750871140. Its totient is φ = 199892736.

The previous prime is 400125017. The next prime is 400125041. The reversal of 400125032 is 230521004.

It can be written as a sum of positive squares in 2 ways, for example, as 353966596 + 46158436 = 18814^2 + 6794^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 400125032.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10913 + ... + 30320.

Almost surely, 2^400125032 is an apocalyptic number.

It is an amenable number.

400125032 is a deficient number, since it is larger than the sum of its proper divisors (350746108).

400125032 is a wasteful number, since it uses less digits than its factorization.

400125032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42452 (or 42448 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 400125032 is about 20003.1255557725. The cubic root of 400125032 is about 736.8830620349.

Adding to 400125032 its reverse (230521004), we get a palindrome (630646036).

The spelling of 400125032 in words is "four hundred million, one hundred twenty-five thousand, thirty-two".