123419957 has 2 divisors, whose sum is σ = 123419958. Its totient is φ = 123419956.

The previous prime is 123419951. The next prime is 123419971. The reversal of 123419957 is 759914321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73942801 + 49477156 = 8599^2 + 7034^2 .

It is a cyclic number.

It is not a de Polignac number, because 123419957 - 2⁶ = 123419893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123419951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61709978 + 61709979.

It is an arithmetic number, because the mean of its divisors is an integer number (61709979).

Almost surely, 2^123419957 is an apocalyptic number.

It is an amenable number.

123419957 is a deficient number, since it is larger than the sum of its proper divisors (1).

123419957 is an equidigital number, since it uses as much as digits as its factorization.

123419957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 41.

The square root of 123419957 is about 11109.4534969097. The cubic root of 123419957 is about 497.8843365628.

The spelling of 123419957 in words is "one hundred twenty-three million, four hundred nineteen thousand, nine hundred fifty-seven".