1001142544 has 20 divisors (see below), whose sum is σ = 1949875200. Its totient is φ = 497948960.

The previous prime is 1001142521. The next prime is 1001142557. The reversal of 1001142544 is 4452411001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160744 + ... + 166855.

It is an arithmetic number, because the mean of its divisors is an integer number (97493760).

Almost surely, 2^1001142544 is an apocalyptic number.

It is an amenable number.

1001142544 is a deficient number, since it is larger than the sum of its proper divisors (948732656).

1001142544 is a wasteful number, since it uses less digits than its factorization.

1001142544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327798 (or 327792 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1001142544 is about 31640.8366513909. The cubic root of 1001142544 is about 1000.3807030468.

Adding to 1001142544 its reverse (4452411001), we get a palindrome (5453553545).

The spelling of 1001142544 in words is "one billion, one million, one hundred forty-two thousand, five hundred forty-four".