242140440401 has 2 divisors, whose sum is σ = 242140440402. Its totient is φ = 242140440400.

The previous prime is 242140440337. The next prime is 242140440413. The reversal of 242140440401 is 104044041242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241056450625 + 1083989776 = 490975^2 + 32924^2 .

It is a cyclic number.

It is not a de Polignac number, because 242140440401 - 2⁶ = 242140440337 is a prime.

It is not a weakly prime, because it can be changed into another prime (242140440431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121070220200 + 121070220201.

It is an arithmetic number, because the mean of its divisors is an integer number (121070220201).

Almost surely, 2^242140440401 is an apocalyptic number.

It is an amenable number.

242140440401 is a deficient number, since it is larger than the sum of its proper divisors (1).

242140440401 is an equidigital number, since it uses as much as digits as its factorization.

242140440401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 242140440401 its reverse (104044041242), we get a palindrome (346184481643).

The spelling of 242140440401 in words is "two hundred forty-two billion, one hundred forty million, four hundred forty thousand, four hundred one".