123401579 has 8 divisors (see below), whose sum is σ = 141965568. Its totient is φ = 105071400.

The previous prime is 123401573. The next prime is 123401581. The reversal of 123401579 is 975104321.

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

It is not a de Polignac number, because 123401579 - 2⁴ = 123401563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123401573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57317 + ... + 59430.

It is an arithmetic number, because the mean of its divisors is an integer number (17745696).

Almost surely, 2^123401579 is an apocalyptic number.

123401579 is a deficient number, since it is larger than the sum of its proper divisors (18563989).

123401579 is a wasteful number, since it uses less digits than its factorization.

123401579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116905.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 123401579 is about 11108.6263327200. The cubic root of 123401579 is about 497.8596226436.

The spelling of 123401579 in words is "one hundred twenty-three million, four hundred one thousand, five hundred seventy-nine".