125402031 has 12 divisors (see below), whose sum is σ = 184106520. Its totient is φ = 82230480.

The previous prime is 125402029. The next prime is 125402051. The reversal of 125402031 is 130204521.

It is not a de Polignac number, because 125402031 - 2¹ = 125402029 is a prime.

It is a super-2 number, since 2×125402031² = 31451338757849922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125401995 and 125402013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125402021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113661 + ... + 114758.

It is an arithmetic number, because the mean of its divisors is an integer number (15342210).

Almost surely, 2^125402031 is an apocalyptic number.

125402031 is a deficient number, since it is larger than the sum of its proper divisors (58704489).

125402031 is a wasteful number, since it uses less digits than its factorization.

125402031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228486 (or 228483 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 125402031 is about 11198.3048270709. The cubic root of 125402031 is about 500.5354676774.

Adding to 125402031 its reverse (130204521), we get a palindrome (255606552).

The spelling of 125402031 in words is "one hundred twenty-five million, four hundred two thousand, thirty-one".