125811042 has 32 divisors (see below), whose sum is σ = 294585984. Its totient is φ = 35068800.

The previous prime is 125811041. The next prime is 125811043. The reversal of 125811042 is 240118521.

It is an interprime number because it is at equal distance from previous prime (125811041) and next prime (125811043).

It is not an unprimeable number, because it can be changed into a prime (125811041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34809 + ... + 38252.

It is an arithmetic number, because the mean of its divisors is an integer number (9205812).

Almost surely, 2^125811042 is an apocalyptic number.

125811042 is an abundant number, since it is smaller than the sum of its proper divisors (168774942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125811042 is a wasteful number, since it uses less digits than its factorization.

125811042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73114.

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 125811042 is about 11216.5521440414. The cubic root of 125811042 is about 501.0790589218.

Adding to 125811042 its reverse (240118521), we get a palindrome (365929563).

The spelling of 125811042 in words is "one hundred twenty-five million, eight hundred eleven thousand, forty-two".