124812889 has 2 divisors, whose sum is σ = 124812890. Its totient is φ = 124812888.

The previous prime is 124812841. The next prime is 124812899. The reversal of 124812889 is 988218421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124545600 + 267289 = 11160^2 + 517^2 .

It is an emirp because it is prime and its reverse (988218421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124812889 - 2⁹ = 124812377 is a prime.

It is not a weakly prime, because it can be changed into another prime (124812899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62406444 + 62406445.

It is an arithmetic number, because the mean of its divisors is an integer number (62406445).

Almost surely, 2^124812889 is an apocalyptic number.

It is an amenable number.

124812889 is a deficient number, since it is larger than the sum of its proper divisors (1).

124812889 is an equidigital number, since it uses as much as digits as its factorization.

124812889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73728, while the sum is 43.

The square root of 124812889 is about 11171.9688954096. The cubic root of 124812889 is about 499.7503940812.

The spelling of 124812889 in words is "one hundred twenty-four million, eight hundred twelve thousand, eight hundred eighty-nine".