123542213998 has 16 divisors (see below), whose sum is σ = 211792855680. Its totient is φ = 52945112376.

The previous prime is 123542213987. The next prime is 123542214023. The reversal of 123542213998 is 899312245321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457773 + ... + 675751.

It is an arithmetic number, because the mean of its divisors is an integer number (13237053480).

Almost surely, 2^123542213998 is an apocalyptic number.

123542213998 is a deficient number, since it is larger than the sum of its proper divisors (88250641682).

123542213998 is a wasteful number, since it uses less digits than its factorization.

123542213998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258471.

The product of its digits is 933120, while the sum is 49.

The spelling of 123542213998 in words is "one hundred twenty-three billion, five hundred forty-two million, two hundred thirteen thousand, nine hundred ninety-eight".