30906042 has 8 divisors (see below), whose sum is σ = 61812096. Its totient is φ = 10302012.

The previous prime is 30906037. The next prime is 30906059. The reversal of 30906042 is 24060903.

It is a sphenic number, since it is the product of 3 distinct primes.

30906042 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2575498 + ... + 2575509.

It is an arithmetic number, because the mean of its divisors is an integer number (7726512).

Almost surely, 2^30906042 is an apocalyptic number.

30906042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30906042 is a wasteful number, since it uses less digits than its factorization.

30906042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5151012.

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

The square root of 30906042 is about 5559.3202821928. The cubic root of 30906042 is about 313.8203700297.

Adding to 30906042 its reverse (24060903), we get a palindrome (54966945).

The spelling of 30906042 in words is "thirty million, nine hundred six thousand, forty-two".