1232112420 has 144 divisors (see below), whose sum is σ = 4659677568. Its totient is φ = 256020480.

The previous prime is 1232112403. The next prime is 1232112449. The reversal of 1232112420 is 242112321.

It is a happy number.

1232112420 is a `hidden beast` number, since 1 + 232 + 1 + 12 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1232112393 and 1232112402.

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, 30589 + ... + 58308.

It is an arithmetic number, because the mean of its divisors is an integer number (32358872).

Almost surely, 2^1232112420 is an apocalyptic number.

1232112420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232112420 is an abundant number, since it is smaller than the sum of its proper divisors (3427565148).

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

1232112420 is a wasteful number, since it uses less digits than its factorization.

1232112420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88930 (or 88925 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1232112420 is about 35101.4589440382. The cubic root of 1232112420 is about 1072.0542885275.

Adding to 1232112420 its reverse (242112321), we get a palindrome (1474224741).

Subtracting from 1232112420 its reverse (242112321), we obtain a palindrome (990000099).

The spelling of 1232112420 in words is "one billion, two hundred thirty-two million, one hundred twelve thousand, four hundred twenty".