242520203 has 2 divisors, whose sum is σ = 242520204. Its totient is φ = 242520202.

The previous prime is 242520139. The next prime is 242520221. The reversal of 242520203 is 302025242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242520203 - 2⁶ = 242520139 is a prime.

It is a super-2 number, since 2×242520203² = 117632097726322418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (242520253) 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, 121260101 + 121260102.

It is an arithmetic number, because the mean of its divisors is an integer number (121260102).

Almost surely, 2^242520203 is an apocalyptic number.

242520203 is a deficient number, since it is larger than the sum of its proper divisors (1).

242520203 is an equidigital number, since it uses as much as digits as its factorization.

242520203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 242520203 is about 15573.0601681237. The cubic root of 242520203 is about 623.6141693218.

Adding to 242520203 its reverse (302025242), we get a palindrome (544545445).

The spelling of 242520203 in words is "two hundred forty-two million, five hundred twenty thousand, two hundred three".