30933142 has 4 divisors (see below), whose sum is σ = 46399716. Its totient is φ = 15466570.

The previous prime is 30933131. The next prime is 30933167. The reversal of 30933142 is 24133903.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24133903 = 31 ⋅778513.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7733284 + ... + 7733287.

It is an arithmetic number, because the mean of its divisors is an integer number (11599929).

Almost surely, 2^30933142 is an apocalyptic number.

30933142 is a deficient number, since it is larger than the sum of its proper divisors (15466574).

30933142 is a wasteful number, since it uses less digits than its factorization.

30933142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15466573.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 30933142 is about 5561.7570964579. The cubic root of 30933142 is about 313.9120678225.

The spelling of 30933142 in words is "thirty million, nine hundred thirty-three thousand, one hundred forty-two".