1042881647 has 4 divisors (see below), whose sum is σ = 1043070840. Its totient is φ = 1042692456.

The previous prime is 1042881613. The next prime is 1042881659. The reversal of 1042881647 is 7461882401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1042881647 - 2⁸ = 1042881391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042881347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86072 + ... + 97437.

It is an arithmetic number, because the mean of its divisors is an integer number (260767710).

Almost surely, 2^1042881647 is an apocalyptic number.

1042881647 is a deficient number, since it is larger than the sum of its proper divisors (189193).

1042881647 is an equidigital number, since it uses as much as digits as its factorization.

1042881647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189192.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 1042881647 is about 32293.6781274602. The cubic root of 1042881647 is about 1014.0942997730.

The spelling of 1042881647 in words is "one billion, forty-two million, eight hundred eighty-one thousand, six hundred forty-seven".