123005061231540 has 96 divisors (see below), whose sum is σ = 345749929176960. Its totient is φ = 32674376749056.

The previous prime is 123005061231539. The next prime is 123005061231607. The reversal of 123005061231540 is 45132160500321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12477631 + ... + 20042489.

It is an arithmetic number, because the mean of its divisors is an integer number (3601561762260).

Almost surely, 2^{123005061231540} is an apocalyptic number.

123005061231540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123005061231540 is an abundant number, since it is smaller than the sum of its proper divisors (222744867945420).

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

123005061231540 is a wasteful number, since it uses less digits than its factorization.

123005061231540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7565921 (or 7565919 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 123005061231540 in words is "one hundred twenty-three trillion, five billion, sixty-one million, two hundred thirty-one thousand, five hundred forty".