172442234 has 4 divisors (see below), whose sum is σ = 258663354. Its totient is φ = 86221116.

The previous prime is 172442213. The next prime is 172442239. The reversal of 172442234 is 432244271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 169390225 + 3052009 = 13015^2 + 1747^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 172442197 and 172442206.

It is not an unprimeable number, because it can be changed into a prime (172442239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43110557 + ... + 43110560.

Almost surely, 2^172442234 is an apocalyptic number.

172442234 is a deficient number, since it is larger than the sum of its proper divisors (86221120).

172442234 is an equidigital number, since it uses as much as digits as its factorization.

172442234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86221119.

The product of its digits is 10752, while the sum is 29.

The square root of 172442234 is about 13131.7262383892. The cubic root of 172442234 is about 556.6059956746.

The spelling of 172442234 in words is "one hundred seventy-two million, four hundred forty-two thousand, two hundred thirty-four".