139942359 has 18 divisors (see below), whose sum is σ = 206560640. Its totient is φ = 91296936.

The previous prime is 139942343. The next prime is 139942403. The reversal of 139942359 is 953249931.

It is not a de Polignac number, because 139942359 - 2⁴ = 139942343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139943359) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16362 + ... + 23400.

Almost surely, 2^139942359 is an apocalyptic number.

139942359 is a deficient number, since it is larger than the sum of its proper divisors (66618281).

139942359 is an equidigital number, since it uses as much as digits as its factorization.

139942359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7139 (or 7089 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 139942359 is about 11829.7235386124. The cubic root of 139942359 is about 519.1781383665.

The spelling of 139942359 in words is "one hundred thirty-nine million, nine hundred forty-two thousand, three hundred fifty-nine".