30642442146 has 24 divisors (see below), whose sum is σ = 66466842624. Its totient is φ = 10202626680.

The previous prime is 30642442141. The next prime is 30642442169. The reversal of 30642442146 is 64124424603.

30642442146 is a `hidden beast` number, since 3 + 0 + 642 + 4 + 4 + 2 + 1 + 4 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 30642442146.

It is not an unprimeable number, because it can be changed into a prime (30642442141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 943650 + ... + 975581.

It is an arithmetic number, because the mean of its divisors is an integer number (2769451776).

Almost surely, 2^30642442146 is an apocalyptic number.

30642442146 is an abundant number, since it is smaller than the sum of its proper divisors (35824400478).

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

30642442146 is a wasteful number, since it uses less digits than its factorization.

30642442146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920126 (or 1920123 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 30642442146 its reverse (64124424603), we get a palindrome (94766866749).

The spelling of 30642442146 in words is "thirty billion, six hundred forty-two million, four hundred forty-two thousand, one hundred forty-six".