1044142657 has 4 divisors (see below), whose sum is σ = 1045886400. Its totient is φ = 1042398916.

The previous prime is 1044142639. The next prime is 1044142679. The reversal of 1044142657 is 7562414401.

1044142657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1044142657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1044142637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 870973 + ... + 872170.

It is an arithmetic number, because the mean of its divisors is an integer number (261471600).

Almost surely, 2^1044142657 is an apocalyptic number.

It is an amenable number.

1044142657 is a deficient number, since it is larger than the sum of its proper divisors (1743743).

1044142657 is an equidigital number, since it uses as much as digits as its factorization.

1044142657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743742.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 1044142657 is about 32313.1963290542. The cubic root of 1044142657 is about 1014.5028689797.

The spelling of 1044142657 in words is "one billion, forty-four million, one hundred forty-two thousand, six hundred fifty-seven".