123642061104 has 80 divisors (see below), whose sum is σ = 329948881920. Its totient is φ = 39855901440.

The previous prime is 123642061087. The next prime is 123642061111. The reversal of 123642061104 is 401160246321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2094262 + ... + 2152490.

It is an arithmetic number, because the mean of its divisors is an integer number (4124361024).

Almost surely, 2^123642061104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123642061104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164974440960).

123642061104 is an abundant number, since it is smaller than the sum of its proper divisors (206306820816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123642061104 is a wasteful number, since it uses less digits than its factorization.

123642061104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59698 (or 59692 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 123642061104 in words is "one hundred twenty-three billion, six hundred forty-two million, sixty-one thousand, one hundred four".