1240520432 has 10 divisors (see below), whose sum is σ = 2403508368. Its totient is φ = 620260208.

The previous prime is 1240520419. The next prime is 1240520453. The reversal of 1240520432 is 2340250421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1240520398 and 1240520407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38766248 + ... + 38766279.

Almost surely, 2^1240520432 is an apocalyptic number.

It is an amenable number.

1240520432 is a deficient number, since it is larger than the sum of its proper divisors (1162987936).

1240520432 is an equidigital number, since it uses as much as digits as its factorization.

1240520432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77532535 (or 77532529 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1240520432 is about 35221.0225859500. The cubic root of 1240520432 is about 1074.4873508780.

Adding to 1240520432 its reverse (2340250421), we get a palindrome (3580770853).

The spelling of 1240520432 in words is "one billion, two hundred forty million, five hundred twenty thousand, four hundred thirty-two".