123290998 has 16 divisors (see below), whose sum is σ = 186390720. Its totient is φ = 61163200.

The previous prime is 123290989. The next prime is 123291037. The reversal of 123290998 is 899092321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241968 + ... + 242476.

It is an arithmetic number, because the mean of its divisors is an integer number (11649420).

Almost surely, 2^123290998 is an apocalyptic number.

123290998 is a deficient number, since it is larger than the sum of its proper divisors (63099722).

123290998 is a wasteful number, since it uses less digits than its factorization.

123290998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 123290998 is about 11103.6479591169. The cubic root of 123290998 is about 497.7108663952.

The spelling of 123290998 in words is "one hundred twenty-three million, two hundred ninety thousand, nine hundred ninety-eight".