172429145 has 8 divisors (see below), whose sum is σ = 236474304. Its totient is φ = 118237104.

The previous prime is 172429129. The next prime is 172429151. The reversal of 172429145 is 541924271.

172429145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 172429145 - 2⁴ = 172429129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 4926547 = 172429145 / (1 + 7 + 2 + 4 + 2 + 9 + 1 + 4 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2463239 + ... + 2463308.

It is an arithmetic number, because the mean of its divisors is an integer number (29559288).

Almost surely, 2^172429145 is an apocalyptic number.

It is an amenable number.

172429145 is a deficient number, since it is larger than the sum of its proper divisors (64045159).

172429145 is an equidigital number, since it uses as much as digits as its factorization.

172429145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4926559.

The product of its digits is 20160, while the sum is 35.

The square root of 172429145 is about 13131.2278557643. The cubic root of 172429145 is about 556.5919125039.

The spelling of 172429145 in words is "one hundred seventy-two million, four hundred twenty-nine thousand, one hundred forty-five".