242307181 has 4 divisors (see below), whose sum is σ = 244706364. Its totient is φ = 239908000.

The previous prime is 242307179. The next prime is 242307187. The reversal of 242307181 is 181703242.

242307181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 197964900 + 44342281 = 14070^2 + 6659^2 .

It is a cyclic number.

It is not a de Polignac number, because 242307181 - 2¹ = 242307179 is a prime.

It is a super-2 number, since 2×242307181² = 117425539928333522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242307187) 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, 1199440 + ... + 1199641.

It is an arithmetic number, because the mean of its divisors is an integer number (61176591).

Almost surely, 2^242307181 is an apocalyptic number.

It is an amenable number.

242307181 is a deficient number, since it is larger than the sum of its proper divisors (2399183).

242307181 is a wasteful number, since it uses less digits than its factorization.

242307181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399182.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 242307181 is about 15566.2192262604. The cubic root of 242307181 is about 623.4315282468.

The spelling of 242307181 in words is "two hundred forty-two million, three hundred seven thousand, one hundred eighty-one".