242423653 has 2 divisors, whose sum is σ = 242423654. Its totient is φ = 242423652.

The previous prime is 242423651. The next prime is 242423663. The reversal of 242423653 is 356324242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133471809 + 108951844 = 11553^2 + 10438^2 .

It is a cyclic number.

It is not a de Polignac number, because 242423653 - 2¹ = 242423651 is a prime.

Together with 242423651, 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 (242423651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121211826 + 121211827.

It is an arithmetic number, because the mean of its divisors is an integer number (121211827).

Almost surely, 2^242423653 is an apocalyptic number.

It is an amenable number.

242423653 is a deficient number, since it is larger than the sum of its proper divisors (1).

242423653 is an equidigital number, since it uses as much as digits as its factorization.

242423653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 31.

The square root of 242423653 is about 15569.9599549903. The cubic root of 242423653 is about 623.5314024167.

Adding to 242423653 its reverse (356324242), we get a palindrome (598747895).

The spelling of 242423653 in words is "two hundred forty-two million, four hundred twenty-three thousand, six hundred fifty-three".