172242367 has 4 divisors (see below), whose sum is σ = 187900776. Its totient is φ = 156583960.

The previous prime is 172242359. The next prime is 172242373. The reversal of 172242367 is 763242271.

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

It is a cyclic number.

It is not a de Polignac number, because 172242367 - 2³ = 172242359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172242307) 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, 7829188 + ... + 7829209.

It is an arithmetic number, because the mean of its divisors is an integer number (46975194).

Almost surely, 2^172242367 is an apocalyptic number.

172242367 is a deficient number, since it is larger than the sum of its proper divisors (15658409).

172242367 is a wasteful number, since it uses less digits than its factorization.

172242367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15658408.

The product of its digits is 28224, while the sum is 34.

The square root of 172242367 is about 13124.1139510445. The cubic root of 172242367 is about 556.3908701501.

It can be divided in two parts, 17224 and 2367, that added together give a palindrome (19591).

The spelling of 172242367 in words is "one hundred seventy-two million, two hundred forty-two thousand, three hundred sixty-seven".