242690101 has 2 divisors, whose sum is σ = 242690102. Its totient is φ = 242690100.

The previous prime is 242690099. The next prime is 242690131. The reversal of 242690101 is 101096242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242549476 + 140625 = 15574^2 + 375^2 .

It is a cyclic number.

It is not a de Polignac number, because 242690101 - 2¹ = 242690099 is a prime.

Together with 242690099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242690131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121345050 + 121345051.

It is an arithmetic number, because the mean of its divisors is an integer number (121345051).

Almost surely, 2^242690101 is an apocalyptic number.

It is an amenable number.

242690101 is a deficient number, since it is larger than the sum of its proper divisors (1).

242690101 is an equidigital number, since it uses as much as digits as its factorization.

242690101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 242690101 is about 15578.5140819014. The cubic root of 242690101 is about 623.7597600357.

The spelling of 242690101 in words is "two hundred forty-two million, six hundred ninety thousand, one hundred one".