30142992 has 40 divisors (see below), whose sum is σ = 84949920. Its totient is φ = 9134080.

The previous prime is 30142951. The next prime is 30142993. The reversal of 30142992 is 29924103.

It is not an unprimeable number, because it can be changed into a prime (30142993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28017 + ... + 29072.

It is an arithmetic number, because the mean of its divisors is an integer number (2123748).

Almost surely, 2^30142992 is an apocalyptic number.

It is an amenable number.

30142992 is an abundant number, since it is smaller than the sum of its proper divisors (54806928).

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

30142992 is a wasteful number, since it uses less digits than its factorization.

30142992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57111 (or 57105 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 30142992 is about 5490.2633816603. The cubic root of 30142992 is about 311.2161454121.

It can be divided in two parts, 3014 and 2992, that added together give a palindrome (6006).

The spelling of 30142992 in words is "thirty million, one hundred forty-two thousand, nine hundred ninety-two".