30142452 has 12 divisors (see below), whose sum is σ = 70332416. Its totient is φ = 10047480.

The previous prime is 30142439. The next prime is 30142477. The reversal of 30142452 is 25424103.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1255924 + ... + 1255947.

Almost surely, 2^30142452 is an apocalyptic number.

It is an amenable number.

30142452 is an abundant number, since it is smaller than the sum of its proper divisors (40189964).

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

30142452 is a wasteful number, since it uses less digits than its factorization.

30142452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511878 (or 2511876 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 30142452 is about 5490.2142034715. The cubic root of 30142452 is about 311.2142869622.

Adding to 30142452 its reverse (25424103), we get a palindrome (55566555).

It can be divided in two parts, 301424 and 52, that added together give a triangular number (301476 = T₇₇₆).

The spelling of 30142452 in words is "thirty million, one hundred forty-two thousand, four hundred fifty-two".