123150054840 has 128 divisors (see below), whose sum is σ = 375212597760. Its totient is φ = 32328451584.

The previous prime is 123150054829. The next prime is 123150054913. The reversal of 123150054840 is 48450051321.

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, 14845734 + ... + 14854026.

It is an arithmetic number, because the mean of its divisors is an integer number (2931348420).

Almost surely, 2^123150054840 is an apocalyptic number.

123150054840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123150054840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187606298880).

123150054840 is an abundant number, since it is smaller than the sum of its proper divisors (252062542920).

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

123150054840 is a wasteful number, since it uses less digits than its factorization.

123150054840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10221 (or 10217 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 123150054840 in words is "one hundred twenty-three billion, one hundred fifty million, fifty-four thousand, eight hundred forty".