139842342 has 32 divisors (see below), whose sum is σ = 311916000. Its totient is φ = 46440864.

The previous prime is 139842319. The next prime is 139842361. The reversal of 139842342 is 243248931.

It is a junction number, because it is equal to n+sod(n) for n = 139842297 and 139842306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10284 + ... + 19632.

It is an arithmetic number, because the mean of its divisors is an integer number (9747375).

Almost surely, 2^139842342 is an apocalyptic number.

139842342 is an abundant number, since it is smaller than the sum of its proper divisors (172073658).

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

139842342 is a wasteful number, since it uses less digits than its factorization.

139842342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9637 (or 9631 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 139842342 is about 11825.4954230256. The cubic root of 139842342 is about 519.0544231078.

The spelling of 139842342 in words is "one hundred thirty-nine million, eight hundred forty-two thousand, three hundred forty-two".