172125423 has 24 divisors (see below), whose sum is σ = 257327616. Its totient is φ = 110754000.

The previous prime is 172125413. The next prime is 172125439. The reversal of 172125423 is 324521271.

It is not a de Polignac number, because 172125423 - 2⁴ = 172125407 is a prime.

It is a super-2 number, since 2×172125423² = 59254322485857858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172125403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163248 + ... + 164298.

It is an arithmetic number, because the mean of its divisors is an integer number (10721984).

Almost surely, 2^172125423 is an apocalyptic number.

172125423 is a deficient number, since it is larger than the sum of its proper divisors (85202193).

172125423 is a wasteful number, since it uses less digits than its factorization.

172125423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675 (or 1672 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 172125423 is about 13119.6578842590. The cubic root of 172125423 is about 556.2649210659.

Adding to 172125423 its reverse (324521271), we get a palindrome (496646694).

The spelling of 172125423 in words is "one hundred seventy-two million, one hundred twenty-five thousand, four hundred twenty-three".