40125172 has 6 divisors (see below), whose sum is σ = 70219058. Its totient is φ = 20062584.

The previous prime is 40125167. The next prime is 40125193. The reversal of 40125172 is 27152104.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 34621456 + 5503716 = 5884^2 + 2346^2 .

It is a super-2 number, since 2×40125172² = 3220058856059168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5015643 + ... + 5015650.

Almost surely, 2^40125172 is an apocalyptic number.

It is an amenable number.

40125172 is a deficient number, since it is larger than the sum of its proper divisors (30093886).

40125172 is a wasteful number, since it uses less digits than its factorization.

40125172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10031297 (or 10031295 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 40125172 is about 6334.4433062425. The cubic root of 40125172 is about 342.3515530524.

Adding to 40125172 its reverse (27152104), we get a palindrome (67277276).

The spelling of 40125172 in words is "forty million, one hundred twenty-five thousand, one hundred seventy-two".