30042609 has 4 divisors (see below), whose sum is σ = 40056816. Its totient is φ = 20028404.

The previous prime is 30042583. The next prime is 30042611. The reversal of 30042609 is 90624003.

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 30042609 - 2¹¹ = 30040561 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30042619) 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, 5007099 + ... + 5007104.

It is an arithmetic number, because the mean of its divisors is an integer number (10014204).

Almost surely, 2^30042609 is an apocalyptic number.

It is an amenable number.

30042609 is a deficient number, since it is larger than the sum of its proper divisors (10014207).

30042609 is a wasteful number, since it uses less digits than its factorization.

30042609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10014206.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 30042609 is about 5481.1138466556. The cubic root of 30042609 is about 310.8702877493.

The spelling of 30042609 in words is "thirty million, forty-two thousand, six hundred nine".