123499294440 has 64 divisors (see below), whose sum is σ = 383273683200. Its totient is φ = 31797518592.

The previous prime is 123499294439. The next prime is 123499294483. The reversal of 123499294440 is 44492994321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17740672 + ... + 17747631.

It is an arithmetic number, because the mean of its divisors is an integer number (5988651300).

Almost surely, 2^123499294440 is an apocalyptic number.

123499294440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123499294440 is an abundant number, since it is smaller than the sum of its proper divisors (259774388760).

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

123499294440 is a wasteful number, since it uses less digits than its factorization.

123499294440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35488346 (or 35488342 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 51.

The spelling of 123499294440 in words is "one hundred twenty-three billion, four hundred ninety-nine million, two hundred ninety-four thousand, four hundred forty".