1240785264 has 40 divisors (see below), whose sum is σ = 3208004992. Its totient is φ = 413254080.

The previous prime is 1240785263. The next prime is 1240785283. The reversal of 1240785264 is 4625870421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240785263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51957 + ... + 71979.

Almost surely, 2^1240785264 is an apocalyptic number.

It is an amenable number.

1240785264 is an abundant number, since it is smaller than the sum of its proper divisors (1967219728).

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

1240785264 is a wasteful number, since it uses less digits than its factorization.

1240785264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21325 (or 21319 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 1240785264 is about 35224.7819581612. The cubic root of 1240785264 is about 1074.5638076026.

The spelling of 1240785264 in words is "one billion, two hundred forty million, seven hundred eighty-five thousand, two hundred sixty-four".