1142720672 has 24 divisors (see below), whose sum is σ = 2258710272. Its totient is φ = 569080000.

The previous prime is 1142720659. The next prime is 1142720681. The reversal of 1142720672 is 2760272411.

It is a super-2 number, since 2×1142720672² = 2611621068432263168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 63104 + ... + 79167.

It is an arithmetic number, because the mean of its divisors is an integer number (94112928).

Almost surely, 2^1142720672 is an apocalyptic number.

It is an amenable number.

1142720672 is a deficient number, since it is larger than the sum of its proper divisors (1115989600).

1142720672 is a wasteful number, since it uses less digits than its factorization.

1142720672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142532 (or 142524 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 1142720672 is about 33804.1516976835. The cubic root of 1142720672 is about 1045.4742997773.

The spelling of 1142720672 in words is "one billion, one hundred forty-two million, seven hundred twenty thousand, six hundred seventy-two".