1240143812920 has 32 divisors (see below), whose sum is σ = 2790639702000. Its totient is φ = 496001325568.

The previous prime is 1240143812917. The next prime is 1240143812959. The reversal of 1240143812920 is 292183410421.

It is a self number, because there is not a number n which added to its sum of digits gives 1240143812920.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1397854 + ... + 2105773.

Almost surely, 2^{1240143812920} is an apocalyptic number.

1240143812920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240143812920 is an abundant number, since it is smaller than the sum of its proper divisors (1550495889080).

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

1240143812920 is a wasteful number, since it uses less digits than its factorization.

1240143812920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3512487 (or 3512483 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 1240143812920 in words is "one trillion, two hundred forty billion, one hundred forty-three million, eight hundred twelve thousand, nine hundred twenty".