242341921 has 2 divisors, whose sum is σ = 242341922. Its totient is φ = 242341920.

The previous prime is 242341909. The next prime is 242341933. The reversal of 242341921 is 129143242.

It is a balanced prime because it is at equal distance from previous prime (242341909) and next prime (242341933).

It can be written as a sum of positive squares in only one way, i.e., 204347025 + 37994896 = 14295^2 + 6164^2 .

It is a cyclic number.

It is not a de Polignac number, because 242341921 - 2⁵ = 242341889 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242341921.

It is not a weakly prime, because it can be changed into another prime (242341991) 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, 121170960 + 121170961.

It is an arithmetic number, because the mean of its divisors is an integer number (121170961).

Almost surely, 2^242341921 is an apocalyptic number.

It is an amenable number.

242341921 is a deficient number, since it is larger than the sum of its proper divisors (1).

242341921 is an equidigital number, since it uses as much as digits as its factorization.

242341921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 28.

The square root of 242341921 is about 15567.3350641656. The cubic root of 242341921 is about 623.4613209756.

It can be divided in two parts, 2423 and 41921, that added together give a palindrome (44344).

The spelling of 242341921 in words is "two hundred forty-two million, three hundred forty-one thousand, nine hundred twenty-one".