242999 has 2 divisors, whose sum is σ = 243000. Its totient is φ = 242998.

The previous prime is 242989. The next prime is 243011. The reversal of 242999 is 999242.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242999 is a prime.

It is a Chen prime.

It is an Ulam number.

242999 is a modest number, since divided by 999 gives 242 as remainder.

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 242999.

It is not a weakly prime, because it can be changed into another prime (242989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121499 + 121500.

It is an arithmetic number, because the mean of its divisors is an integer number (121500).

2²⁴²⁹⁹⁹ is an apocalyptic number.

242999 is a deficient number, since it is larger than the sum of its proper divisors (1).

242999 is an equidigital number, since it uses as much as digits as its factorization.

242999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 35.

The square root of 242999 is about 492.9492874526. The cubic root of 242999 is about 62.4024290913.

It can be divided in two parts, 2429 and 99, that multiplied together give a triangular number (240471 = T₆₉₃).

The spelling of 242999 in words is "two hundred forty-two thousand, nine hundred ninety-nine".