242142961 has 2 divisors, whose sum is σ = 242142962. Its totient is φ = 242142960.

The previous prime is 242142959. The next prime is 242143003. The reversal of 242142961 is 169241242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178382736 + 63760225 = 13356^2 + 7985^2 .

It is a cyclic number.

It is not a de Polignac number, because 242142961 - 2¹ = 242142959 is a prime.

It is a super-3 number, since 3×242142961³ (a number of 26 digits) contains 333 as substring.

Together with 242142959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (242142931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121071480 + 121071481.

It is an arithmetic number, because the mean of its divisors is an integer number (121071481).

Almost surely, 2^242142961 is an apocalyptic number.

It is an amenable number.

242142961 is a deficient number, since it is larger than the sum of its proper divisors (1).

242142961 is an equidigital number, since it uses as much as digits as its factorization.

242142961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 242142961 is about 15560.9434482617. The cubic root of 242142961 is about 623.2906560109.

The spelling of 242142961 in words is "two hundred forty-two million, one hundred forty-two thousand, nine hundred sixty-one".