172442709143 has 4 divisors (see below), whose sum is σ = 172486737240. Its totient is φ = 172398681048.

The previous prime is 172442709013. The next prime is 172442709151. The reversal of 172442709143 is 341907244271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341907244271 = 549767 ⋅621913.

It is a cyclic number.

It is not a de Polignac number, because 172442709143 - 2⁸ = 172442708887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172442709094 and 172442709103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172442709163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22008173 + ... + 22016006.

It is an arithmetic number, because the mean of its divisors is an integer number (43121684310).

Almost surely, 2^172442709143 is an apocalyptic number.

172442709143 is a deficient number, since it is larger than the sum of its proper divisors (44028097).

172442709143 is an equidigital number, since it uses as much as digits as its factorization.

172442709143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44028096.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 172442709143 in words is "one hundred seventy-two billion, four hundred forty-two million, seven hundred nine thousand, one hundred forty-three".