1240040928520 has 64 divisors (see below), whose sum is σ = 2857715150400. Its totient is φ = 484130338560.

The previous prime is 1240040928481. The next prime is 1240040928523. The reversal of 1240040928520 is 258290400421.

It is a self number, because there is not a number n which added to its sum of digits gives 1240040928520.

It is not an unprimeable number, because it can be changed into a prime (1240040928523) 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, 1830366 + ... + 2414605.

It is an arithmetic number, because the mean of its divisors is an integer number (44651799225).

Almost surely, 2^{1240040928520} is an apocalyptic number.

1240040928520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240040928520 is an abundant number, since it is smaller than the sum of its proper divisors (1617674221880).

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

1240040928520 is a wasteful number, since it uses less digits than its factorization.

1240040928520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4245158 (or 4245154 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 1240040928520 in words is "one trillion, two hundred forty billion, forty million, nine hundred twenty-eight thousand, five hundred twenty".