30039142 has 32 divisors (see below), whose sum is σ = 53706240. Its totient is φ = 12333120.

The previous prime is 30039131. The next prime is 30039199. The reversal of 30039142 is 24193003.

It is a congruent number.

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, 33423 + ... + 34309.

It is an arithmetic number, because the mean of its divisors is an integer number (1678320).

Almost surely, 2^30039142 is an apocalyptic number.

30039142 is a deficient number, since it is larger than the sum of its proper divisors (23667098).

30039142 is a wasteful number, since it uses less digits than its factorization.

30039142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 30039142 is about 5480.7975696973. The cubic root of 30039142 is about 310.8583288595.

The spelling of 30039142 in words is "thirty million, thirty-nine thousand, one hundred forty-two".