123390428244 has 48 divisors (see below), whose sum is σ = 300623363712. Its totient is φ = 39316406272.

The previous prime is 123390428219. The next prime is 123390428263. The reversal of 123390428244 is 442824093321.

It is a junction number, because it is equal to n+sod(n) for n = 123390428196 and 123390428205.

It is a congruent number.

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, 284692 + ... + 572564.

It is an arithmetic number, because the mean of its divisors is an integer number (6262986744).

Almost surely, 2^123390428244 is an apocalyptic number.

It is an amenable number.

123390428244 is an abundant number, since it is smaller than the sum of its proper divisors (177232935468).

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

123390428244 is a wasteful number, since it uses less digits than its factorization.

123390428244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289456 (or 289454 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 123390428244 in words is "one hundred twenty-three billion, three hundred ninety million, four hundred twenty-eight thousand, two hundred forty-four".