242399 has 2 divisors, whose sum is σ = 242400. Its totient is φ = 242398.

The previous prime is 242393. The next prime is 242413. The reversal of 242399 is 993242.

242399 is nontrivially palindromic in base 6.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242399 is a prime.

It is a Chen prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121199 + 121200.

It is an arithmetic number, because the mean of its divisors is an integer number (121200).

2²⁴²³⁹⁹ is an apocalyptic number.

242399 is a deficient number, since it is larger than the sum of its proper divisors (1).

242399 is an equidigital number, since it uses as much as digits as its factorization.

242399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 29.

The square root of 242399 is about 492.3403294470. The cubic root of 242399 is about 62.3510265259.

The spelling of 242399 in words is "two hundred forty-two thousand, three hundred ninety-nine".