242892157 has 2 divisors, whose sum is σ = 242892158. Its totient is φ = 242892156.

The previous prime is 242892149. The next prime is 242892191. The reversal of 242892157 is 751298242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190053796 + 52838361 = 13786^2 + 7269^2 .

It is a cyclic number.

It is not a de Polignac number, because 242892157 - 2³ = 242892149 is a prime.

It is a super-2 number, since 2×242892157² = 117993199864225298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242892127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121446078 + 121446079.

It is an arithmetic number, because the mean of its divisors is an integer number (121446079).

Almost surely, 2^242892157 is an apocalyptic number.

It is an amenable number.

242892157 is a deficient number, since it is larger than the sum of its proper divisors (1).

242892157 is an equidigital number, since it uses as much as digits as its factorization.

242892157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The square root of 242892157 is about 15584.9978184150. The cubic root of 242892157 is about 623.9328194783.

It can be divided in two parts, 242892 and 157, that added together give a square (243049 = 493²).

The spelling of 242892157 in words is "two hundred forty-two million, eight hundred ninety-two thousand, one hundred fifty-seven".