242172361 has 8 divisors (see below), whose sum is σ = 257375880. Its totient is φ = 227075328.

The previous prime is 242172331. The next prime is 242172383. The reversal of 242172361 is 163271242.

It can be written as a sum of positive squares in 4 ways, for example, as 960400 + 241211961 = 980^2 + 15531^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 242172361 - 2²⁷ = 107954633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242172311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21906 + ... + 31051.

It is an arithmetic number, because the mean of its divisors is an integer number (32171985).

Almost surely, 2^242172361 is an apocalyptic number.

It is an amenable number.

242172361 is a deficient number, since it is larger than the sum of its proper divisors (15203519).

242172361 is a wasteful number, since it uses less digits than its factorization.

242172361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53243.

The product of its digits is 4032, while the sum is 28.

The square root of 242172361 is about 15561.8880923878. Note that the first 3 decimals coincide. The cubic root of 242172361 is about 623.3158807840.

The spelling of 242172361 in words is "two hundred forty-two million, one hundred seventy-two thousand, three hundred sixty-one".