172442019 has 16 divisors (see below), whose sum is σ = 234723744. Its totient is φ = 112569600.

The previous prime is 172442009. The next prime is 172442077. The reversal of 172442019 is 910244271.

It is not a de Polignac number, because 172442019 - 2¹⁹ = 171917731 is a prime.

It is a super-3 number, since 3×172442019³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (172442009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129879 + ... + 131199.

It is an arithmetic number, because the mean of its divisors is an integer number (14670234).

Almost surely, 2^172442019 is an apocalyptic number.

172442019 is a deficient number, since it is larger than the sum of its proper divisors (62281725).

172442019 is a wasteful number, since it uses less digits than its factorization.

172442019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 172442019 is about 13131.7180521057. The cubic root of 172442019 is about 556.6057643501.

The spelling of 172442019 in words is "one hundred seventy-two million, four hundred forty-two thousand, nineteen".