123379091 has 4 divisors (see below), whose sum is σ = 134595384. Its totient is φ = 112162800.

The previous prime is 123379073. The next prime is 123379097. The reversal of 123379091 is 190973321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123379091 - 2¹⁰ = 123378067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123379097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5608130 + ... + 5608151.

It is an arithmetic number, because the mean of its divisors is an integer number (33648846).

Almost surely, 2^123379091 is an apocalyptic number.

123379091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123379091 is a deficient number, since it is larger than the sum of its proper divisors (11216293).

123379091 is a wasteful number, since it uses less digits than its factorization.

123379091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11216292.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 123379091 is about 11107.6141002467. The cubic root of 123379091 is about 497.8293784402.

The spelling of 123379091 in words is "one hundred twenty-three million, three hundred seventy-nine thousand, ninety-one".