124671917 has 2 divisors, whose sum is σ = 124671918. Its totient is φ = 124671916.

The previous prime is 124671881. The next prime is 124671919. The reversal of 124671917 is 719176421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122522761 + 2149156 = 11069^2 + 1466^2 .

It is a cyclic number.

It is not a de Polignac number, because 124671917 - 2¹² = 124667821 is a prime.

Together with 124671919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124671919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62335958 + 62335959.

It is an arithmetic number, because the mean of its divisors is an integer number (62335959).

Almost surely, 2^124671917 is an apocalyptic number.

It is an amenable number.

124671917 is a deficient number, since it is larger than the sum of its proper divisors (1).

124671917 is an equidigital number, since it uses as much as digits as its factorization.

124671917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 38.

The square root of 124671917 is about 11165.6579295624. The cubic root of 124671917 is about 499.5621727265.

The spelling of 124671917 in words is "one hundred twenty-four million, six hundred seventy-one thousand, nine hundred seventeen".