242090833 has 2 divisors, whose sum is σ = 242090834. Its totient is φ = 242090832.

The previous prime is 242090813. The next prime is 242090851. The reversal of 242090833 is 338090242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208311489 + 33779344 = 14433^2 + 5812^2 .

It is a cyclic number.

It is not a de Polignac number, because 242090833 - 2²⁵ = 208536401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242090795 and 242090804.

It is not a weakly prime, because it can be changed into another prime (242090813) 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, 121045416 + 121045417.

It is an arithmetic number, because the mean of its divisors is an integer number (121045417).

Almost surely, 2^242090833 is an apocalyptic number.

It is an amenable number.

242090833 is a deficient number, since it is larger than the sum of its proper divisors (1).

242090833 is an equidigital number, since it uses as much as digits as its factorization.

242090833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 242090833 is about 15559.2683953970. The cubic root of 242090833 is about 623.2459259240.

The spelling of 242090833 in words is "two hundred forty-two million, ninety thousand, eight hundred thirty-three".