123432020 has 24 divisors (see below), whose sum is σ = 259459200. Its totient is φ = 49324832.

The previous prime is 123432013. The next prime is 123432077. The reversal of 123432020 is 20234321.

It is a super-2 number, since 2×123432020² = 30470927122560800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123432020.

It is a congruent number.

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, 24041 + ... + 28719.

It is an arithmetic number, because the mean of its divisors is an integer number (10810800).

Almost surely, 2^123432020 is an apocalyptic number.

123432020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123432020 is an abundant number, since it is smaller than the sum of its proper divisors (136027180).

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

123432020 is a wasteful number, since it uses less digits than its factorization.

123432020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6007 (or 6005 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 123432020 is about 11109.9963996394. The cubic root of 123432020 is about 497.9005570165.

Adding to 123432020 its reverse (20234321), we get a palindrome (143666341).

The spelling of 123432020 in words is "one hundred twenty-three million, four hundred thirty-two thousand, twenty".