242310253 has 2 divisors, whose sum is σ = 242310254. Its totient is φ = 242310252.

The previous prime is 242310251. The next prime is 242310371. The reversal of 242310253 is 352013242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207417604 + 34892649 = 14402^2 + 5907^2 .

It is a cyclic number.

It is not a de Polignac number, because 242310253 - 2¹ = 242310251 is a prime.

Together with 242310251, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242310251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121155126 + 121155127.

It is an arithmetic number, because the mean of its divisors is an integer number (121155127).

Almost surely, 2^242310253 is an apocalyptic number.

It is an amenable number.

242310253 is a deficient number, since it is larger than the sum of its proper divisors (1).

242310253 is an equidigital number, since it uses as much as digits as its factorization.

242310253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 242310253 is about 15566.3179011608. The cubic root of 242310253 is about 623.4341628827.

Adding to 242310253 its reverse (352013242), we get a palindrome (594323495).

The spelling of 242310253 in words is "two hundred forty-two million, three hundred ten thousand, two hundred fifty-three".