172042673 has 4 divisors (see below), whose sum is σ = 187682928. Its totient is φ = 156402420.

The previous prime is 172042621. The next prime is 172042681. The reversal of 172042673 is 376240271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 376240271 = 11 ⋅34203661.

It is a cyclic number.

It is not a de Polignac number, because 172042673 - 2⁸ = 172042417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172042373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7820111 + ... + 7820132.

It is an arithmetic number, because the mean of its divisors is an integer number (46920732).

Almost surely, 2^172042673 is an apocalyptic number.

It is an amenable number.

172042673 is a deficient number, since it is larger than the sum of its proper divisors (15640255).

172042673 is a wasteful number, since it uses less digits than its factorization.

172042673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15640254.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 172042673 is about 13116.5038405819. The cubic root of 172042673 is about 556.1757645661.

The spelling of 172042673 in words is "one hundred seventy-two million, forty-two thousand, six hundred seventy-three".