17139942 has 12 divisors (see below), whose sum is σ = 37136580. Its totient is φ = 5713308.

The previous prime is 17139907. The next prime is 17139949. The reversal of 17139942 is 24993171.

It is a super-2 number, since 2×17139942² = 587555223526728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 17139897 and 17139906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17139949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 476092 + ... + 476127.

It is an arithmetic number, because the mean of its divisors is an integer number (3094715).

Almost surely, 2^17139942 is an apocalyptic number.

17139942 is an abundant number, since it is smaller than the sum of its proper divisors (19996638).

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

17139942 is a wasteful number, since it uses less digits than its factorization.

17139942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952227 (or 952224 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 17139942 is about 4140.0413041418. The cubic root of 17139942 is about 257.8317814560.

It can be divided in two parts, 17139 and 942, that added together give a palindrome (18081).

The spelling of 17139942 in words is "seventeen million, one hundred thirty-nine thousand, nine hundred forty-two".