30478042 has 32 divisors (see below), whose sum is σ = 56056320. Its totient is φ = 12130560.

The previous prime is 30478037. The next prime is 30478057. The reversal of 30478042 is 24087403.

It is a super-2 number, since 2×30478042² = 1857822088307528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30478042.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17992 + ... + 19612.

It is an arithmetic number, because the mean of its divisors is an integer number (1751760).

Almost surely, 2^30478042 is an apocalyptic number.

30478042 is a deficient number, since it is larger than the sum of its proper divisors (25578278).

30478042 is a wasteful number, since it uses less digits than its factorization.

30478042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 30478042 is about 5520.6921667487. The cubic root of 30478042 is about 312.3649917079.

The spelling of 30478042 in words is "thirty million, four hundred seventy-eight thousand, forty-two".