125042031 has 12 divisors (see below), whose sum is σ = 180898120. Its totient is φ = 83231280.

The previous prime is 125042011. The next prime is 125042051. The reversal of 125042031 is 130240521.

It is an interprime number because it is at equal distance from previous prime (125042011) and next prime (125042051).

It is not a de Polignac number, because 125042031 - 2⁹ = 125041519 is a prime.

It is a super-2 number, since 2×125042031² = 31271019033209922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125041995 and 125042013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125042011) 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, 4561 + ... + 16458.

Almost surely, 2^125042031 is an apocalyptic number.

125042031 is a deficient number, since it is larger than the sum of its proper divisors (55856089).

125042031 is a wasteful number, since it uses less digits than its factorization.

125042031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21686 (or 21683 counting only the distinct ones).

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

The square root of 125042031 is about 11182.2194129788. The cubic root of 125042031 is about 500.0560350532.

Adding to 125042031 its reverse (130240521), we get a palindrome (255282552).

It can be divided in two parts, 12504 and 2031, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 125042031 in words is "one hundred twenty-five million, forty-two thousand, thirty-one".