123021320194 has 16 divisors (see below), whose sum is σ = 197428524480. Its totient is φ = 57317956560.

The previous prime is 123021320167. The next prime is 123021320237. The reversal of 123021320194 is 491023120321.

It is a happy 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, 26533774 + ... + 26538409.

It is an arithmetic number, because the mean of its divisors is an integer number (12339282780).

Almost surely, 2^123021320194 is an apocalyptic number.

123021320194 is a deficient number, since it is larger than the sum of its proper divisors (74407204286).

123021320194 is a wasteful number, since it uses less digits than its factorization.

123021320194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53072265.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 123021320194 in words is "one hundred twenty-three billion, twenty-one million, three hundred twenty thousand, one hundred ninety-four".