17172142 has 16 divisors (see below), whose sum is σ = 29372112. Its totient is φ = 7459200.

The previous prime is 17172139. The next prime is 17172149. The reversal of 17172142 is 24127171.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17172149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18984 + ... + 19867.

It is an arithmetic number, because the mean of its divisors is an integer number (1835757).

Almost surely, 2^17172142 is an apocalyptic number.

17172142 is a deficient number, since it is larger than the sum of its proper divisors (12199970).

17172142 is a wasteful number, since it uses less digits than its factorization.

17172142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38883.

The product of its digits is 784, while the sum is 25.

The square root of 17172142 is about 4143.9283294961. The cubic root of 17172142 is about 257.9931392523.

The spelling of 17172142 in words is "seventeen million, one hundred seventy-two thousand, one hundred forty-two".