1042682809 has 6 divisors (see below), whose sum is σ = 1212916794. Its totient is φ = 893728080.

The previous prime is 1042682807. The next prime is 1042682819. The reversal of 1042682809 is 9082862401.

It can be written as a sum of positive squares in only one way, i.e., 1035037584 + 7645225 = 32172^2 + 2765^2 .

It is not a de Polignac number, because 1042682809 - 2¹ = 1042682807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042682803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10639572 + ... + 10639669.

It is an arithmetic number, because the mean of its divisors is an integer number (202152799).

Almost surely, 2^1042682809 is an apocalyptic number.

It is an amenable number.

1042682809 is a deficient number, since it is larger than the sum of its proper divisors (170233985).

1042682809 is an equidigital number, since it uses as much as digits as its factorization.

1042682809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21279255 (or 21279248 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 1042682809 is about 32290.5993905347. The cubic root of 1042682809 is about 1014.0298458952.

The spelling of 1042682809 in words is "one billion, forty-two million, six hundred eighty-two thousand, eight hundred nine".