1042380909 has 24 divisors (see below), whose sum is σ = 1561419392. Its totient is φ = 669552480.

The previous prime is 1042380883. The next prime is 1042380961. The reversal of 1042380909 is 9090832401.

It is not a de Polignac number, because 1042380909 - 2¹⁵ = 1042348141 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042380509) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19104 + ... + 49494.

Almost surely, 2^1042380909 is an apocalyptic number.

It is an amenable number.

1042380909 is a deficient number, since it is larger than the sum of its proper divisors (519038483).

1042380909 is a wasteful number, since it uses less digits than its factorization.

1042380909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30537 (or 30534 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1042380909 is about 32285.9243169527. The cubic root of 1042380909 is about 1013.9319685226.

The spelling of 1042380909 in words is "one billion, forty-two million, three hundred eighty thousand, nine hundred nine".