242994197 has 2 divisors, whose sum is σ = 242994198. Its totient is φ = 242994196.

The previous prime is 242994179. The next prime is 242994217. The reversal of 242994197 is 791499242.

Together with previous prime (242994179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231222436 + 11771761 = 15206^2 + 3431^2 .

It is a cyclic number.

It is not a de Polignac number, because 242994197 - 2²² = 238799893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242994137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121497098 + 121497099.

It is an arithmetic number, because the mean of its divisors is an integer number (121497099).

Almost surely, 2^242994197 is an apocalyptic number.

It is an amenable number.

242994197 is a deficient number, since it is larger than the sum of its proper divisors (1).

242994197 is an equidigital number, since it uses as much as digits as its factorization.

242994197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 242994197 is about 15588.2711356969. The cubic root of 242994197 is about 624.0201794989.

The spelling of 242994197 in words is "two hundred forty-two million, nine hundred ninety-four thousand, one hundred ninety-seven".