125112839 has 2 divisors, whose sum is σ = 125112840. Its totient is φ = 125112838.

The previous prime is 125112833. The next prime is 125112851. The reversal of 125112839 is 938211521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125112839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125112833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62556419 + 62556420.

It is an arithmetic number, because the mean of its divisors is an integer number (62556420).

Almost surely, 2^125112839 is an apocalyptic number.

125112839 is a deficient number, since it is larger than the sum of its proper divisors (1).

125112839 is an equidigital number, since it uses as much as digits as its factorization.

125112839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 32.

The square root of 125112839 is about 11185.3850626610. The cubic root of 125112839 is about 500.1504067511.

The spelling of 125112839 in words is "one hundred twenty-five million, one hundred twelve thousand, eight hundred thirty-nine".