242391803 has 2 divisors, whose sum is σ = 242391804. Its totient is φ = 242391802.

The previous prime is 242391769. The next prime is 242391827. The reversal of 242391803 is 308193242.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242391803 - 2¹⁰ = 242390779 is a prime.

It is a super-3 number, since 3×242391803³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 242391803.

It is not a weakly prime, because it can be changed into another prime (242391833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121195901 + 121195902.

It is an arithmetic number, because the mean of its divisors is an integer number (121195902).

Almost surely, 2^242391803 is an apocalyptic number.

242391803 is a deficient number, since it is larger than the sum of its proper divisors (1).

242391803 is an equidigital number, since it uses as much as digits as its factorization.

242391803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 242391803 is about 15568.9371185062. The cubic root of 242391803 is about 623.5040943760.

The spelling of 242391803 in words is "two hundred forty-two million, three hundred ninety-one thousand, eight hundred three".