1239117342 has 16 divisors (see below), whose sum is σ = 2478579600. Its totient is φ = 412981632.

The previous prime is 1239117329. The next prime is 1239117343. The reversal of 1239117342 is 2437119321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1239117343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78534 + ... + 92982.

It is an arithmetic number, because the mean of its divisors is an integer number (154911225).

Almost surely, 2^1239117342 is an apocalyptic number.

1239117342 is an abundant number, since it is smaller than the sum of its proper divisors (1239462258).

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

1239117342 is a wasteful number, since it uses less digits than its factorization.

1239117342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28747.

The product of its digits is 9072, while the sum is 33.

The square root of 1239117342 is about 35201.0985908111. The cubic root of 1239117342 is about 1074.0820985966.

The spelling of 1239117342 in words is "one billion, two hundred thirty-nine million, one hundred seventeen thousand, three hundred forty-two".