125642056 has 8 divisors (see below), whose sum is σ = 235578870. Its totient is φ = 62821024.

The previous prime is 125642021. The next prime is 125642057. The reversal of 125642056 is 650246521.

It can be written as a sum of positive squares in only one way, i.e., 102697956 + 22944100 = 10134^2 + 4790^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (125642057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7852621 + ... + 7852636.

Almost surely, 2^125642056 is an apocalyptic number.

It is an amenable number.

125642056 is a deficient number, since it is larger than the sum of its proper divisors (109936814).

125642056 is a wasteful number, since it uses less digits than its factorization.

125642056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15705263 (or 15705259 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 125642056 is about 11209.0167276171. The cubic root of 125642056 is about 500.8546131073.

Adding to 125642056 its reverse (650246521), we get a palindrome (775888577).

The spelling of 125642056 in words is "one hundred twenty-five million, six hundred forty-two thousand, fifty-six".