242140440413 has 2 divisors, whose sum is σ = 242140440414. Its totient is φ = 242140440412.

The previous prime is 242140440401. The next prime is 242140440431. The reversal of 242140440413 is 314044041242.

Together with next prime (242140440431) 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., 193615840324 + 48524600089 = 440018^2 + 220283^2 .

It is a cyclic number.

It is not a de Polignac number, because 242140440413 - 2³⁰ = 241066698589 is a prime.

It is a super-2 number, since 2×242140440413² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242140440463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121070220206 + 121070220207.

It is an arithmetic number, because the mean of its divisors is an integer number (121070220207).

Almost surely, 2^242140440413 is an apocalyptic number.

It is an amenable number.

242140440413 is a deficient number, since it is larger than the sum of its proper divisors (1).

242140440413 is an equidigital number, since it uses as much as digits as its factorization.

242140440413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 242140440413 its reverse (314044041242), we get a palindrome (556184481655).

The spelling of 242140440413 in words is "two hundred forty-two billion, one hundred forty million, four hundred forty thousand, four hundred thirteen".