125408039 has 2 divisors, whose sum is σ = 125408040. Its totient is φ = 125408038.

The previous prime is 125408027. The next prime is 125408057. The reversal of 125408039 is 930804521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125408039 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 125407996 and 125408014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125408639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62704019 + 62704020.

It is an arithmetic number, because the mean of its divisors is an integer number (62704020).

Almost surely, 2^125408039 is an apocalyptic number.

125408039 is a deficient number, since it is larger than the sum of its proper divisors (1).

125408039 is an equidigital number, since it uses as much as digits as its factorization.

125408039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 125408039 is about 11198.5730787453. The cubic root of 125408039 is about 500.5434610861.

The spelling of 125408039 in words is "one hundred twenty-five million, four hundred eight thousand, thirty-nine".