17942138 has 8 divisors (see below), whose sum is σ = 26943840. Its totient is φ = 8960860.

The previous prime is 17942129. The next prime is 17942161. The reversal of 17942138 is 83124971.

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

It is a super-2 number, since 2×17942138² = 643840632022088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 17942098 and 17942107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2678 + ... + 6561.

It is an arithmetic number, because the mean of its divisors is an integer number (3367980).

Almost surely, 2^17942138 is an apocalyptic number.

17942138 is a deficient number, since it is larger than the sum of its proper divisors (9001702).

17942138 is an equidigital number, since it uses as much as digits as its factorization.

17942138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10212.

The product of its digits is 12096, while the sum is 35.

The square root of 17942138 is about 4235.8160961024. The cubic root of 17942138 is about 261.7930206878.

The spelling of 17942138 in words is "seventeen million, nine hundred forty-two thousand, one hundred thirty-eight".