123917091 has 8 divisors (see below), whose sum is σ = 167213760. Its totient is φ = 81615912.

The previous prime is 123917083. The next prime is 123917111. The reversal of 123917091 is 190719321.

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

It is not a de Polignac number, because 123917091 - 2³ = 123917083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123917011) 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, 248581 + ... + 249078.

It is an arithmetic number, because the mean of its divisors is an integer number (20901720).

Almost surely, 2^123917091 is an apocalyptic number.

123917091 is a deficient number, since it is larger than the sum of its proper divisors (43296669).

123917091 is an equidigital number, since it uses as much as digits as its factorization.

123917091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497745.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 123917091 is about 11131.8053791827. The cubic root of 123917091 is about 498.5519315776.

The spelling of 123917091 in words is "one hundred twenty-three million, nine hundred seventeen thousand, ninety-one".