1142564988 has 48 divisors (see below), whose sum is σ = 2702887040. Its totient is φ = 375620544.

The previous prime is 1142564957. The next prime is 1142564993. The reversal of 1142564988 is 8894652411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259695 + ... + 264057.

Almost surely, 2^1142564988 is an apocalyptic number.

It is an amenable number.

1142564988 is an abundant number, since it is smaller than the sum of its proper divisors (1560322052).

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

1142564988 is a wasteful number, since it uses less digits than its factorization.

1142564988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4666 (or 4664 counting only the distinct ones).

The product of its digits is 552960, while the sum is 48.

The square root of 1142564988 is about 33801.8488843436. The cubic root of 1142564988 is about 1045.4268192287.

The spelling of 1142564988 in words is "one billion, one hundred forty-two million, five hundred sixty-four thousand, nine hundred eighty-eight".