309150235242 has 24 divisors (see below), whose sum is σ = 670226908260. Its totient is φ = 102988324800.

The previous prime is 309150235189. The next prime is 309150235279. The reversal of 309150235242 is 242532051903.

309150235242 is a `hidden beast` number, since 30 + 9 + 150 + 235 + 242 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 296261401401 + 12888833841 = 544299^2 + 113529^2 .

It is a junction number, because it is equal to n+sod(n) for n = 309150235197 and 309150235206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5115259 + ... + 5175342.

Almost surely, 2^309150235242 is an apocalyptic number.

309150235242 is an abundant number, since it is smaller than the sum of its proper divisors (361076673018).

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

309150235242 is a wasteful number, since it uses less digits than its factorization.

309150235242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10292278 (or 10292275 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 309150235242 in words is "three hundred nine billion, one hundred fifty million, two hundred thirty-five thousand, two hundred forty-two".