242100197 has 2 divisors, whose sum is σ = 242100198. Its totient is φ = 242100196.

The previous prime is 242100167. The next prime is 242100211. The reversal of 242100197 is 791001242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212168356 + 29931841 = 14566^2 + 5471^2 .

It is a cyclic number.

It is not a de Polignac number, because 242100197 - 2¹⁸ = 241838053 is a prime.

It is a super-2 number, since 2×242100197² = 117225010774877618, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242100107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121050098 + 121050099.

It is an arithmetic number, because the mean of its divisors is an integer number (121050099).

Almost surely, 2^242100197 is an apocalyptic number.

It is an amenable number.

242100197 is a deficient number, since it is larger than the sum of its proper divisors (1).

242100197 is an equidigital number, since it uses as much as digits as its factorization.

242100197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 242100197 is about 15559.5693063786. The cubic root of 242100197 is about 623.2539614748.

The spelling of 242100197 in words is "two hundred forty-two million, one hundred thousand, one hundred ninety-seven".