172130407 has 8 divisors (see below), whose sum is σ = 174859776. Its totient is φ = 169421592.

The previous prime is 172130393. The next prime is 172130411. The reversal of 172130407 is 704031271.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172130407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172130417) 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, 12198 + ... + 22204.

It is an arithmetic number, because the mean of its divisors is an integer number (21857472).

Almost surely, 2^172130407 is an apocalyptic number.

172130407 is a deficient number, since it is larger than the sum of its proper divisors (2729369).

172130407 is a wasteful number, since it uses less digits than its factorization.

172130407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10277.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 172130407 is about 13119.8478268614. The cubic root of 172130407 is about 556.2702900144.

Adding to 172130407 its reverse (704031271), we get a palindrome (876161678).

The spelling of 172130407 in words is "one hundred seventy-two million, one hundred thirty thousand, four hundred seven".