1142521764 has 24 divisors (see below), whose sum is σ = 2667997920. Its totient is φ = 380538624.

The previous prime is 1142521733. The next prime is 1142521777. The reversal of 1142521764 is 4671252411.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21709 + ... + 52500.

It is an arithmetic number, because the mean of its divisors is an integer number (111166580).

Almost surely, 2^1142521764 is an apocalyptic number.

It is an amenable number.

1142521764 is an abundant number, since it is smaller than the sum of its proper divisors (1525476156).

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

1142521764 is a wasteful number, since it uses less digits than its factorization.

1142521764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75499 (or 75497 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 1142521764 is about 33801.2095049867. The cubic root of 1142521764 is about 1045.4136359965.

The spelling of 1142521764 in words is "one billion, one hundred forty-two million, five hundred twenty-one thousand, seven hundred sixty-four".