172242214 has 4 divisors (see below), whose sum is σ = 258363324. Its totient is φ = 86121106.

The previous prime is 172242211. The next prime is 172242229. The reversal of 172242214 is 412242271.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172242211) 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 as a sum of consecutive naturals, namely, 43060552 + ... + 43060555.

It is an arithmetic number, because the mean of its divisors is an integer number (64590831).

Almost surely, 2^172242214 is an apocalyptic number.

172242214 is a deficient number, since it is larger than the sum of its proper divisors (86121110).

172242214 is an equidigital number, since it uses as much as digits as its factorization.

172242214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86121109.

The product of its digits is 1792, while the sum is 25.

The square root of 172242214 is about 13124.1081220782. The cubic root of 172242214 is about 556.3907054058.

Adding to 172242214 its reverse (412242271), we get a palindrome (584484485).

The spelling of 172242214 in words is "one hundred seventy-two million, two hundred forty-two thousand, two hundred fourteen".