30142142120 has 16 divisors (see below), whose sum is σ = 67819819860. Its totient is φ = 12056856832.

The previous prime is 30142142087. The next prime is 30142142153. The reversal of 30142142120 is 2124124103.

It is an interprime number because it is at equal distance from previous prime (30142142087) and next prime (30142142153).

It can be written as a sum of positive squares in 2 ways, for example, as 27749562724 + 2392579396 = 166582^2 + 48914^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30142142092 and 30142142101.

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, 376776737 + ... + 376776816.

Almost surely, 2^30142142120 is an apocalyptic number.

It is an amenable number.

30142142120 is an abundant number, since it is smaller than the sum of its proper divisors (37677677740).

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

30142142120 is a wasteful number, since it uses less digits than its factorization.

30142142120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753553564 (or 753553560 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 30142142120 its reverse (2124124103), we get a palindrome (32266266223).

The spelling of 30142142120 in words is "thirty billion, one hundred forty-two million, one hundred forty-two thousand, one hundred twenty".