123402100224 has 160 divisors (see below), whose sum is σ = 374866319520. Its totient is φ = 35736256512.

The previous prime is 123402100219. The next prime is 123402100253. The reversal of 123402100224 is 422001204321.

It is a self number, because there is not a number n which added to its sum of digits gives 123402100224.

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, 157692 + ... + 521220.

It is an arithmetic number, because the mean of its divisors is an integer number (2342914497).

Almost surely, 2^123402100224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123402100224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187433159760).

123402100224 is an abundant number, since it is smaller than the sum of its proper divisors (251464219296).

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

123402100224 is a wasteful number, since it uses less digits than its factorization.

123402100224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363580 (or 363564 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 123402100224 its reverse (422001204321), we get a palindrome (545403304545).

The spelling of 123402100224 in words is "one hundred twenty-three billion, four hundred two million, one hundred thousand, two hundred twenty-four".