123252420 has 24 divisors (see below), whose sum is σ = 345106944. Its totient is φ = 32867296.

The previous prime is 123252413. The next prime is 123252433. The reversal of 123252420 is 24252321.

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, 1027044 + ... + 1027163.

It is an arithmetic number, because the mean of its divisors is an integer number (14379456).

Almost surely, 2^123252420 is an apocalyptic number.

123252420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123252420 is an abundant number, since it is smaller than the sum of its proper divisors (221854524).

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

123252420 is a wasteful number, since it uses less digits than its factorization.

123252420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054219 (or 2054217 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 123252420 is about 11101.9106463707. The cubic root of 123252420 is about 497.6589494044.

Subtracting from 123252420 its reverse (24252321), we obtain a palindrome (99000099).

The spelling of 123252420 in words is "one hundred twenty-three million, two hundred fifty-two thousand, four hundred twenty".