1232242440 has 128 divisors (see below), whose sum is σ = 4343068800. Its totient is φ = 275742720.

The previous prime is 1232242387. The next prime is 1232242447. The reversal of 1232242440 is 442422321.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1232242440.

It is not an unprimeable number, because it can be changed into a prime (1232242447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18745 + ... + 53064.

It is an arithmetic number, because the mean of its divisors is an integer number (33930225).

Almost surely, 2^1232242440 is an apocalyptic number.

1232242440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232242440 is an abundant number, since it is smaller than the sum of its proper divisors (3110826360).

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

1232242440 is a wasteful number, since it uses less digits than its factorization.

1232242440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71847 (or 71843 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1232242440 is about 35103.3109549512. The cubic root of 1232242440 is about 1072.0919970984.

Adding to 1232242440 its reverse (442422321), we get a palindrome (1674664761).

The spelling of 1232242440 in words is "one billion, two hundred thirty-two million, two hundred forty-two thousand, four hundred forty".