30142021252 has 12 divisors (see below), whose sum is σ = 60284042560. Its totient is φ = 12918009096.

The previous prime is 30142021237. The next prime is 30142021253. The reversal of 30142021252 is 25212024103.

It is a happy number.

30142021252 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (30142021253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538250352 + ... + 538250407.

Almost surely, 2^30142021252 is an apocalyptic number.

It is an amenable number.

30142021252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30142021252 is a wasteful number, since it uses less digits than its factorization.

30142021252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076500770 (or 1076500768 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 30142021252 its reverse (25212024103), we get a palindrome (55354045355).

The spelling of 30142021252 in words is "thirty billion, one hundred forty-two million, twenty-one thousand, two hundred fifty-two".