30142029987 has 10 divisors (see below), whose sum is σ = 45026983188. Its totient is φ = 20094686604.

The previous prime is 30142029959. The next prime is 30142029997. The reversal of 30142029987 is 78992024103.

It is not a de Polignac number, because 30142029987 - 2⁶ = 30142029923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30142029997) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 186061833 + ... + 186061994.

Almost surely, 2^30142029987 is an apocalyptic number.

30142029987 is a deficient number, since it is larger than the sum of its proper divisors (14884953201).

30142029987 is an equidigital number, since it uses as much as digits as its factorization.

30142029987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372123839 (or 372123830 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 30142029987 in words is "thirty billion, one hundred forty-two million, twenty-nine thousand, nine hundred eighty-seven".