123579957 has 8 divisors (see below), whose sum is σ = 165555040. Its totient is φ = 81995760.

The previous prime is 123579913. The next prime is 123579977. The reversal of 123579957 is 759975321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123579957 - 2⁷ = 123579829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123579977) 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 in 7 ways as a sum of consecutive naturals, for example, 96982 + ... + 98247.

It is an arithmetic number, because the mean of its divisors is an integer number (20694380).

Almost surely, 2^123579957 is an apocalyptic number.

It is an amenable number.

123579957 is a deficient number, since it is larger than the sum of its proper divisors (41975083).

123579957 is a wasteful number, since it uses less digits than its factorization.

123579957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195443.

The product of its digits is 595350, while the sum is 48.

The square root of 123579957 is about 11116.6522388712. The cubic root of 123579957 is about 498.0993938802.

The spelling of 123579957 in words is "one hundred twenty-three million, five hundred seventy-nine thousand, nine hundred fifty-seven".