1240543732 has 12 divisors (see below), whose sum is σ = 2265340896. Its totient is φ = 593303480.

The previous prime is 1240543723. The next prime is 1240543789. The reversal of 1240543732 is 2373450421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1240543694 and 1240543703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6741994 + ... + 6742177.

It is an arithmetic number, because the mean of its divisors is an integer number (188778408).

Almost surely, 2^1240543732 is an apocalyptic number.

It is an amenable number.

1240543732 is a deficient number, since it is larger than the sum of its proper divisors (1024797164).

1240543732 is a wasteful number, since it uses less digits than its factorization.

1240543732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13484198 (or 13484196 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 1240543732 is about 35221.3533527603. The cubic root of 1240543732 is about 1074.4940780005.

The spelling of 1240543732 in words is "one billion, two hundred forty million, five hundred forty-three thousand, seven hundred thirty-two".