172923743 has 8 divisors (see below), whose sum is σ = 175061712. Its totient is φ = 170793216.

The previous prime is 172923733. The next prime is 172923791. The reversal of 172923743 is 347329271.

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 172923743 - 2⁴ = 172923727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172923697 and 172923706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172923703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55421 + ... + 58457.

It is an arithmetic number, because the mean of its divisors is an integer number (21882714).

Almost surely, 2^172923743 is an apocalyptic number.

172923743 is a deficient number, since it is larger than the sum of its proper divisors (2137969).

172923743 is an equidigital number, since it uses as much as digits as its factorization.

172923743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721.

The product of its digits is 63504, while the sum is 38.

The square root of 172923743 is about 13150.0472622725. The cubic root of 172923743 is about 557.1235829687.

The spelling of 172923743 in words is "one hundred seventy-two million, nine hundred twenty-three thousand, seven hundred forty-three".