242232181 has 4 divisors (see below), whose sum is σ = 243718432. Its totient is φ = 240745932.

The previous prime is 242232173. The next prime is 242232187. The reversal of 242232181 is 181232242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 242232181 - 2³ = 242232173 is a prime.

It is a super-2 number, since 2×242232181² = 117352859024033522, 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 (242232187) 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, 742881 + ... + 743206.

It is an arithmetic number, because the mean of its divisors is an integer number (60929608).

Almost surely, 2^242232181 is an apocalyptic number.

It is an amenable number.

242232181 is a deficient number, since it is larger than the sum of its proper divisors (1486251).

242232181 is a wasteful number, since it uses less digits than its factorization.

242232181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486250.

The product of its digits is 1536, while the sum is 25.

The square root of 242232181 is about 15563.8099769947. The cubic root of 242232181 is about 623.3671991730.

The spelling of 242232181 in words is "two hundred forty-two million, two hundred thirty-two thousand, one hundred eighty-one".