125454839 has 2 divisors, whose sum is σ = 125454840. Its totient is φ = 125454838.

The previous prime is 125454829. The next prime is 125454937. The reversal of 125454839 is 938454521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125454839 - 2²⁰ = 124406263 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 125454796 and 125454805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125454809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62727419 + 62727420.

It is an arithmetic number, because the mean of its divisors is an integer number (62727420).

Almost surely, 2^125454839 is an apocalyptic number.

125454839 is a deficient number, since it is larger than the sum of its proper divisors (1).

125454839 is an equidigital number, since it uses as much as digits as its factorization.

125454839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 41.

The square root of 125454839 is about 11200.6624357669. The cubic root of 125454839 is about 500.6057179153.

The spelling of 125454839 in words is "one hundred twenty-five million, four hundred fifty-four thousand, eight hundred thirty-nine".