1240988964 has 12 divisors (see below), whose sum is σ = 2895640944. Its totient is φ = 413662984.

The previous prime is 1240988953. The next prime is 1240988981. The reversal of 1240988964 is 4698890421.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51707862 + ... + 51707885.

It is an arithmetic number, because the mean of its divisors is an integer number (241303412).

Almost surely, 2^1240988964 is an apocalyptic number.

It is an amenable number.

1240988964 is an abundant number, since it is smaller than the sum of its proper divisors (1654651980).

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

1240988964 is a wasteful number, since it uses less digits than its factorization.

1240988964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103415754 (or 103415752 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 1240988964 is about 35227.6732697463. The cubic root of 1240988964 is about 1074.6226081801.

The spelling of 1240988964 in words is "one billion, two hundred forty million, nine hundred eighty-eight thousand, nine hundred sixty-four".