30142512 has 120 divisors (see below), whose sum is σ = 92851200. Its totient is φ = 9085824.

The previous prime is 30142507. The next prime is 30142543. The reversal of 30142512 is 21524103.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62689 + ... + 63167.

It is an arithmetic number, because the mean of its divisors is an integer number (773760).

Almost surely, 2^30142512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30142512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46425600).

30142512 is an abundant number, since it is smaller than the sum of its proper divisors (62708688).

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

30142512 is a wasteful number, since it uses less digits than its factorization.

30142512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 30142512 is about 5490.2196677364. The cubic root of 30142512 is about 311.2144934578.

Adding to 30142512 its reverse (21524103), we get a palindrome (51666615).

The spelling of 30142512 in words is "thirty million, one hundred forty-two thousand, five hundred twelve".