123032212305420 has 144 divisors (see below), whose sum is σ = 378741396418560. Its totient is φ = 29819147064960.

The previous prime is 123032212305407. The next prime is 123032212305449. The reversal of 123032212305420 is 24503212230321.

It is a super-2 number, since 2×123032212305420² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29733301 + ... + 33617459.

It is an arithmetic number, because the mean of its divisors is an integer number (2630148586240).

Almost surely, 2^{123032212305420} is an apocalyptic number.

123032212305420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123032212305420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189370698209280).

123032212305420 is an abundant number, since it is smaller than the sum of its proper divisors (255709184113140).

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

123032212305420 is a wasteful number, since it uses less digits than its factorization.

123032212305420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888556 (or 3888543 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 123032212305420 its reverse (24503212230321), we get a palindrome (147535424535741).

The spelling of 123032212305420 in words is "one hundred twenty-three trillion, thirty-two billion, two hundred twelve million, three hundred five thousand, four hundred twenty".