1232440420 has 24 divisors (see below), whose sum is σ = 2589048000. Its totient is φ = 492800352.

The previous prime is 1232440399. The next prime is 1232440421. The reversal of 1232440420 is 240442321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1232440391 and 1232440400.

It is not an unprimeable number, because it can be changed into a prime (1232440421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56641 + ... + 75319.

It is an arithmetic number, because the mean of its divisors is an integer number (107877000).

Almost surely, 2^1232440420 is an apocalyptic number.

1232440420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232440420 is an abundant number, since it is smaller than the sum of its proper divisors (1356607580).

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

1232440420 is a wasteful number, since it uses less digits than its factorization.

1232440420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21987 (or 21985 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1232440420 is about 35106.1308036075. The cubic root of 1232440420 is about 1072.1494104235.

Adding to 1232440420 its reverse (240442321), we get a palindrome (1472882741).

The spelling of 1232440420 in words is "one billion, two hundred thirty-two million, four hundred forty thousand, four hundred twenty".