30805942 has 8 divisors (see below), whose sum is σ = 46641096. Its totient is φ = 15258912.

The previous prime is 30805919. The next prime is 30805981. The reversal of 30805942 is 24950803.

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

It is a congruent 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, 71763 + ... + 72190.

It is an arithmetic number, because the mean of its divisors is an integer number (5830137).

Almost surely, 2^30805942 is an apocalyptic number.

30805942 is a deficient number, since it is larger than the sum of its proper divisors (15835154).

30805942 is a wasteful number, since it uses less digits than its factorization.

30805942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144062.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 30805942 is about 5550.3100814279. The cubic root of 30805942 is about 313.4811980038.

The spelling of 30805942 in words is "thirty million, eight hundred five thousand, nine hundred forty-two".