1021042152240 has 160 divisors (see below), whose sum is σ = 3487167735552. Its totient is φ = 245074560000.

The previous prime is 1021042152239. The next prime is 1021042152253. The reversal of 1021042152240 is 422512401201.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1021042152240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1648006 + ... + 2181285.

Almost surely, 2^{1021042152240} is an apocalyptic number.

1021042152240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021042152240 is an abundant number, since it is smaller than the sum of its proper divisors (2466125583312).

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

1021042152240 is a wasteful number, since it uses less digits than its factorization.

1021042152240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3829419 (or 3829413 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 1021042152240 its reverse (422512401201), we get a palindrome (1443554553441).

The spelling of 1021042152240 in words is "one trillion, twenty-one billion, forty-two million, one hundred fifty-two thousand, two hundred forty".