1240157260 has 12 divisors (see below), whose sum is σ = 2604330288. Its totient is φ = 496062896.

The previous prime is 1240157257. The next prime is 1240157279. The reversal of 1240157260 is 627510421.

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, 31003912 + ... + 31003951.

It is an arithmetic number, because the mean of its divisors is an integer number (217027524).

Almost surely, 2^1240157260 is an apocalyptic number.

1240157260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240157260 is an abundant number, since it is smaller than the sum of its proper divisors (1364173028).

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

1240157260 is a wasteful number, since it uses less digits than its factorization.

1240157260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62007872 (or 62007870 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1240157260 is about 35215.8665944770. The cubic root of 1240157260 is about 1074.3824858024.

Adding to 1240157260 its reverse (627510421), we get a palindrome (1867667681).

The spelling of 1240157260 in words is "one billion, two hundred forty million, one hundred fifty-seven thousand, two hundred sixty".