123038349940 has 24 divisors (see below), whose sum is σ = 281869674912. Its totient is φ = 44741218080.

The previous prime is 123038349911. The next prime is 123038349979. The reversal of 123038349940 is 49943830321.

It is a congruent 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, 279632394 + ... + 279632833.

It is an arithmetic number, because the mean of its divisors is an integer number (11744569788).

Almost surely, 2^123038349940 is an apocalyptic number.

123038349940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123038349940 is an abundant number, since it is smaller than the sum of its proper divisors (158831324972).

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

123038349940 is a wasteful number, since it uses less digits than its factorization.

123038349940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559265247 (or 559265245 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 123038349940 in words is "one hundred twenty-three billion, thirty-eight million, three hundred forty-nine thousand, nine hundred forty".