1021496742072 has 48 divisors (see below), whose sum is σ = 2841325404840. Its totient is φ = 331296239808.

The previous prime is 1021496742043. The next prime is 1021496742073. The reversal of 1021496742072 is 2702476941201.

1021496742072 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 496 + 74 + 20 + 72 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021496742073) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 191719698 + ... + 191725025.

Almost surely, 2^{1021496742072} is an apocalyptic number.

1021496742072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021496742072 is an abundant number, since it is smaller than the sum of its proper divisors (1819828662768).

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

1021496742072 is a wasteful number, since it uses less digits than its factorization.

1021496742072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383444772 (or 383444765 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 1021496742072 in words is "one trillion, twenty-one billion, four hundred ninety-six million, seven hundred forty-two thousand, seventy-two".