30009942 has 24 divisors (see below), whose sum is σ = 65219544. Its totient is φ = 9972864.

The previous prime is 30009919. The next prime is 30009979. The reversal of 30009942 is 24990003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3993 + ... + 8715.

It is an arithmetic number, because the mean of its divisors is an integer number (2717481).

Almost surely, 2^30009942 is an apocalyptic number.

30009942 is an abundant number, since it is smaller than the sum of its proper divisors (35209602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30009942 is a wasteful number, since it uses less digits than its factorization.

30009942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5084 (or 5081 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 30009942 is about 5478.1330761492. The cubic root of 30009942 is about 310.7575713661.

Adding to 30009942 its reverse (24990003), we get a palindrome (54999945).

The spelling of 30009942 in words is "thirty million, nine thousand, nine hundred forty-two".