172428119 has 4 divisors (see below), whose sum is σ = 172510944. Its totient is φ = 172345296.

The previous prime is 172428089. The next prime is 172428121. The reversal of 172428119 is 911824271.

172428119 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172428119 is a prime.

It is a super-2 number, since 2×172428119² = 59462912443756322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172428199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38207 + ... + 42480.

It is an arithmetic number, because the mean of its divisors is an integer number (43127736).

Almost surely, 2^172428119 is an apocalyptic number.

172428119 is a deficient number, since it is larger than the sum of its proper divisors (82825).

172428119 is an equidigital number, since it uses as much as digits as its factorization.

172428119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82824.

The product of its digits is 8064, while the sum is 35.

The square root of 172428119 is about 13131.1887885294. The cubic root of 172428119 is about 556.5908085443.

The spelling of 172428119 in words is "one hundred seventy-two million, four hundred twenty-eight thousand, one hundred nineteen".