242402231129 has 2 divisors, whose sum is σ = 242402231130. Its totient is φ = 242402231128.

The previous prime is 242402231111. The next prime is 242402231131. The reversal of 242402231129 is 921132204242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227676894025 + 14725337104 = 477155^2 + 121348^2 .

It is a cyclic number.

It is not a de Polignac number, because 242402231129 - 2²⁰ = 242401182553 is a prime.

It is a super-2 number, since 2×242402231129² (a number of 24 digits) contains 22 as substring.

Together with 242402231131, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 242402231095 and 242402231104.

It is not a weakly prime, because it can be changed into another prime (242402231179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121201115564 + 121201115565.

It is an arithmetic number, because the mean of its divisors is an integer number (121201115565).

Almost surely, 2^242402231129 is an apocalyptic number.

It is an amenable number.

242402231129 is a deficient number, since it is larger than the sum of its proper divisors (1).

242402231129 is an equidigital number, since it uses as much as digits as its factorization.

242402231129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 242402231129 in words is "two hundred forty-two billion, four hundred two million, two hundred thirty-one thousand, one hundred twenty-nine".