2042435509 has 4 divisors (see below), whose sum is σ = 2077053120. Its totient is φ = 2007817900.

The previous prime is 2042435501. The next prime is 2042435597. The reversal of 2042435509 is 9055342402.

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 not a de Polignac number, because 2042435509 - 2³ = 2042435501 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 (2042435501) 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, 17308717 + ... + 17308834.

It is an arithmetic number, because the mean of its divisors is an integer number (519263280).

Almost surely, 2^2042435509 is an apocalyptic number.

It is an amenable number.

2042435509 is a deficient number, since it is larger than the sum of its proper divisors (34617611).

2042435509 is an equidigital number, since it uses as much as digits as its factorization.

2042435509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34617610.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 2042435509 is about 45193.3126579586. The cubic root of 2042435509 is about 1268.7696578639.

The spelling of 2042435509 in words is "two billion, forty-two million, four hundred thirty-five thousand, five hundred nine".