125131042 has 8 divisors (see below), whose sum is σ = 187782300. Its totient is φ = 62536944.

The previous prime is 125131037. The next prime is 125131103. The reversal of 125131042 is 240131521.

It can be written as a sum of positive squares in 2 ways, for example, as 125014761 + 116281 = 11181^2 + 341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 8317 + ... + 17872.

Almost surely, 2^125131042 is an apocalyptic number.

125131042 is a deficient number, since it is larger than the sum of its proper divisors (62651258).

125131042 is a wasteful number, since it uses less digits than its factorization.

125131042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28580.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 125131042 is about 11186.1987287908. The cubic root of 125131042 is about 500.1746616462.

Adding to 125131042 its reverse (240131521), we get a palindrome (365262563).

The spelling of 125131042 in words is "one hundred twenty-five million, one hundred thirty-one thousand, forty-two".