142239105317 has 8 divisors (see below), whose sum is σ = 142577422680. Its totient is φ = 141900917760.

The previous prime is 142239105289. The next prime is 142239105329. The reversal of 142239105317 is 713501932241.

It is a Cunningham number, because it is equal to 377146²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 28394272036 + 113844833281 = 168506^2 + 337409^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142239105317 is a prime.

It is a super-3 number, since 3×142239105317³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142239105377) 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, 2371733 + ... + 2430965.

It is an arithmetic number, because the mean of its divisors is an integer number (17822177835).

Almost surely, 2^142239105317 is an apocalyptic number.

It is an amenable number.

142239105317 is a deficient number, since it is larger than the sum of its proper divisors (338317363).

142239105317 is an equidigital number, since it uses as much as digits as its factorization.

142239105317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64903.

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 142239105317 in words is "one hundred forty-two billion, two hundred thirty-nine million, one hundred five thousand, three hundred seventeen".