305586139242 has 64 divisors (see below), whose sum is σ = 617539780224. Its totient is φ = 100808294400.

The previous prime is 305586139241. The next prime is 305586139249. The reversal of 305586139242 is 242931685503.

It is a junction number, because it is equal to n+sod(n) for n = 305586139191 and 305586139200.

It is not an unprimeable number, because it can be changed into a prime (305586139241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190871242 + ... + 190872842.

It is an arithmetic number, because the mean of its divisors is an integer number (9649059066).

Almost surely, 2^305586139242 is an apocalyptic number.

305586139242 is an abundant number, since it is smaller than the sum of its proper divisors (311953640982).

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

305586139242 is a wasteful number, since it uses less digits than its factorization.

305586139242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 305586139242 in words is "three hundred five billion, five hundred eighty-six million, one hundred thirty-nine thousand, two hundred forty-two".