42405424361 has 2 divisors, whose sum is σ = 42405424362. Its totient is φ = 42405424360.

The previous prime is 42405424289. The next prime is 42405424421. The reversal of 42405424361 is 16342450424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30408384400 + 11997039961 = 174380^2 + 109531^2 .

It is a cyclic number.

It is not a de Polignac number, because 42405424361 - 2²⁶ = 42338315497 is a prime.

It is not a weakly prime, because it can be changed into another prime (42405426361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21202712180 + 21202712181.

It is an arithmetic number, because the mean of its divisors is an integer number (21202712181).

Almost surely, 2^42405424361 is an apocalyptic number.

It is an amenable number.

42405424361 is a deficient number, since it is larger than the sum of its proper divisors (1).

42405424361 is an equidigital number, since it uses as much as digits as its factorization.

42405424361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 42405424361 its reverse (16342450424), we get a palindrome (58747874785).

The spelling of 42405424361 in words is "forty-two billion, four hundred five million, four hundred twenty-four thousand, three hundred sixty-one".