1142745544 has 16 divisors (see below), whose sum is σ = 2147019120. Its totient is φ = 570207120.

The previous prime is 1142745509. The next prime is 1142745587. The reversal of 1142745544 is 4455472411.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141534 + ... + 149389.

It is an arithmetic number, because the mean of its divisors is an integer number (134188695).

Almost surely, 2^1142745544 is an apocalyptic number.

It is an amenable number.

1142745544 is a deficient number, since it is larger than the sum of its proper divisors (1004273576).

1142745544 is a wasteful number, since it uses less digits than its factorization.

1142745544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291420 (or 291416 counting only the distinct ones).

The product of its digits is 89600, while the sum is 37.

The square root of 1142745544 is about 33804.5195794882. The cubic root of 1142745544 is about 1045.4818848471.

The spelling of 1142745544 in words is "one billion, one hundred forty-two million, seven hundred forty-five thousand, five hundred forty-four".