1240055957 has 16 divisors (see below), whose sum is σ = 1508572800. Its totient is φ = 995639040.

The previous prime is 1240055951. The next prime is 1240055977. The reversal of 1240055957 is 7595500421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1240055957 - 2¹⁴ = 1240039573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1240055957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240055951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40544 + ... + 64217.

It is an arithmetic number, because the mean of its divisors is an integer number (94285800).

Almost surely, 2^1240055957 is an apocalyptic number.

It is an amenable number.

1240055957 is a deficient number, since it is larger than the sum of its proper divisors (268516843).

1240055957 is a wasteful number, since it uses less digits than its factorization.

1240055957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104876.

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 1240055957 is about 35214.4282503635. The cubic root of 1240055957 is about 1074.3532311436.

The spelling of 1240055957 in words is "one billion, two hundred forty million, fifty-five thousand, nine hundred fifty-seven".