1232400120 has 64 divisors (see below), whose sum is σ = 4225374720. Its totient is φ = 281691264.

The previous prime is 1232400101. The next prime is 1232400157. The reversal of 1232400120 is 210042321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1232400120.

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, 732732 + ... + 734411.

It is an arithmetic number, because the mean of its divisors is an integer number (66021480).

Almost surely, 2^1232400120 is an apocalyptic number.

1232400120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232400120 is an abundant number, since it is smaller than the sum of its proper divisors (2992974600).

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

1232400120 is a wasteful number, since it uses less digits than its factorization.

1232400120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467164 (or 1467160 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1232400120 is about 35105.5568250954. The cubic root of 1232400120 is about 1072.1377241000.

Adding to 1232400120 its reverse (210042321), we get a palindrome (1442442441).

The spelling of 1232400120 in words is "one billion, two hundred thirty-two million, four hundred thousand, one hundred twenty".