242670997 has 2 divisors, whose sum is σ = 242670998. Its totient is φ = 242670996.

The previous prime is 242670979. The next prime is 242671019. The reversal of 242670997 is 799076242.

It is a happy number.

Together with previous prime (242670979) 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., 181737361 + 60933636 = 13481^2 + 7806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242670997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242670397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121335498 + 121335499.

It is an arithmetic number, because the mean of its divisors is an integer number (121335499).

Almost surely, 2^242670997 is an apocalyptic number.

It is an amenable number.

242670997 is a deficient number, since it is larger than the sum of its proper divisors (1).

242670997 is an equidigital number, since it uses as much as digits as its factorization.

242670997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 242670997 is about 15577.9009176461. The cubic root of 242670997 is about 623.7433926339.

The spelling of 242670997 in words is "two hundred forty-two million, six hundred seventy thousand, nine hundred ninety-seven".