242084819 has 2 divisors, whose sum is σ = 242084820. Its totient is φ = 242084818.

The previous prime is 242084813. The next prime is 242084839. The reversal of 242084819 is 918480242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242084819 - 2⁴ = 242084803 is a prime.

It is a super-2 number, since 2×242084819² = 117210119180525522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (242084813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121042409 + 121042410.

It is an arithmetic number, because the mean of its divisors is an integer number (121042410).

Almost surely, 2^242084819 is an apocalyptic number.

242084819 is a deficient number, since it is larger than the sum of its proper divisors (1).

242084819 is an equidigital number, since it uses as much as digits as its factorization.

242084819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 242084819 is about 15559.0751331819. The cubic root of 242084819 is about 623.2407650070.

The spelling of 242084819 in words is "two hundred forty-two million, eighty-four thousand, eight hundred nineteen".