125042140531 has 24 divisors (see below), whose sum is σ = 159130326384. Its totient is φ = 97159265280.

The previous prime is 125042140523. The next prime is 125042140537. The reversal of 125042140531 is 135041240521.

It is not a de Polignac number, because 125042140531 - 2³ = 125042140523 is a prime.

It is a super-2 number, since 2×125042140531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125042140531.

It is not an unprimeable number, because it can be changed into a prime (125042140537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138330 + ... + 518863.

It is an arithmetic number, because the mean of its divisors is an integer number (6630430266).

Almost surely, 2^125042140531 is an apocalyptic number.

125042140531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

125042140531 is a deficient number, since it is larger than the sum of its proper divisors (34088185853).

125042140531 is a wasteful number, since it uses less digits than its factorization.

125042140531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657571 (or 657564 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The spelling of 125042140531 in words is "one hundred twenty-five billion, forty-two million, one hundred forty thousand, five hundred thirty-one".