242279 has 2 divisors, whose sum is σ = 242280. Its totient is φ = 242278.

The previous prime is 242273. The next prime is 242309. The reversal of 242279 is 972242.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242279 is a prime.

It is a super-2 number, since 2×242279² = 117398227682, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121139 + 121140.

It is an arithmetic number, because the mean of its divisors is an integer number (121140).

2²⁴²²⁷⁹ is an apocalyptic number.

242279 is a deficient number, since it is larger than the sum of its proper divisors (1).

242279 is an equidigital number, since it uses as much as digits as its factorization.

242279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 26.

The square root of 242279 is about 492.2184474398. The cubic root of 242279 is about 62.3407358369.

The spelling of 242279 in words is "two hundred forty-two thousand, two hundred seventy-nine".