42440200220449 has 2 divisors, whose sum is σ = 42440200220450. Its totient is φ = 42440200220448.

The previous prime is 42440200220389. The next prime is 42440200220479. The reversal of 42440200220449 is 94402200204424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22142859584400 + 20297340636049 = 4705620^2 + 4505257^2 .

It is a cyclic number.

It is not a de Polignac number, because 42440200220449 - 2⁷ = 42440200220321 is a prime.

It is not a weakly prime, because it can be changed into another prime (42440200220479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21220100110224 + 21220100110225.

It is an arithmetic number, because the mean of its divisors is an integer number (21220100110225).

Almost surely, 2^{42440200220449} is an apocalyptic number.

It is an amenable number.

42440200220449 is a deficient number, since it is larger than the sum of its proper divisors (1).

42440200220449 is an equidigital number, since it uses as much as digits as its factorization.

42440200220449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147456, while the sum is 37.

The spelling of 42440200220449 in words is "forty-two trillion, four hundred forty billion, two hundred million, two hundred twenty thousand, four hundred forty-nine".