242322281 has 4 divisors (see below), whose sum is σ = 243409152. Its totient is φ = 241235412.

The previous prime is 242322277. The next prime is 242322313. The reversal of 242322281 is 182223242.

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 242322281 - 2² = 242322277 is a prime.

It is a super-2 number, since 2×242322281² = 117440175738085922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242322281.

It is not an unprimeable number, because it can be changed into a prime (242322221) 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, 543101 + ... + 543546.

It is an arithmetic number, because the mean of its divisors is an integer number (60852288).

Almost surely, 2^242322281 is an apocalyptic number.

It is an amenable number.

242322281 is a deficient number, since it is larger than the sum of its proper divisors (1086871).

242322281 is a wasteful number, since it uses less digits than its factorization.

242322281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086870.

The product of its digits is 3072, while the sum is 26.

The square root of 242322281 is about 15566.7042433522. The cubic root of 242322281 is about 623.4444782284. Note that the first 4 decimals are identical.

The spelling of 242322281 in words is "two hundred forty-two million, three hundred twenty-two thousand, two hundred eighty-one".