17872942 has 4 divisors (see below), whose sum is σ = 26809416. Its totient is φ = 8936470.

The previous prime is 17872937. The next prime is 17872949. The reversal of 17872942 is 24927871.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 17872895 and 17872904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17872949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4468234 + ... + 4468237.

It is an arithmetic number, because the mean of its divisors is an integer number (6702354).

Almost surely, 2^17872942 is an apocalyptic number.

17872942 is a deficient number, since it is larger than the sum of its proper divisors (8936474).

17872942 is an equidigital number, since it uses as much as digits as its factorization.

17872942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8936473.

The product of its digits is 56448, while the sum is 40.

The square root of 17872942 is about 4227.6402401340. The cubic root of 17872942 is about 261.4560417563.

The spelling of 17872942 in words is "seventeen million, eight hundred seventy-two thousand, nine hundred forty-two".