34243840242 has 24 divisors (see below), whose sum is σ = 74851584444. Its totient is φ = 11313598464.

The previous prime is 34243840187. The next prime is 34243840247. The reversal of 34243840242 is 24204834243.

34243840242 is a `hidden beast` number, since 3 + 4 + 243 + 8 + 402 + 4 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21129238881 + 13114601361 = 145359^2 + 114519^2 .

It is a junction number, because it is equal to n+sod(n) for n = 34243840197 and 34243840206.

It is not an unprimeable number, because it can be changed into a prime (34243840247) 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, 8415823 + ... + 8419890.

Almost surely, 2^34243840242 is an apocalyptic number.

34243840242 is an abundant number, since it is smaller than the sum of its proper divisors (40607744202).

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

34243840242 is a wasteful number, since it uses less digits than its factorization.

34243840242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16835834 (or 16835831 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 36.

The spelling of 34243840242 in words is "thirty-four billion, two hundred forty-three million, eight hundred forty thousand, two hundred forty-two".