42322661 has 2 divisors, whose sum is σ = 42322662. Its totient is φ = 42322660.

The previous prime is 42322601. The next prime is 42322667. The reversal of 42322661 is 16622324.

42322661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32273761 + 10048900 = 5681^2 + 3170^2 .

It is a cyclic number.

It is not a de Polignac number, because 42322661 - 2¹⁰ = 42321637 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42322661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42322667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21161330 + 21161331.

It is an arithmetic number, because the mean of its divisors is an integer number (21161331).

Almost surely, 2^42322661 is an apocalyptic number.

It is an amenable number.

42322661 is a deficient number, since it is larger than the sum of its proper divisors (1).

42322661 is an equidigital number, since it uses as much as digits as its factorization.

42322661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 26.

The square root of 42322661 is about 6505.5869066519. The cubic root of 42322661 is about 348.4905361472.

Adding to 42322661 its reverse (16622324), we get a palindrome (58944985).

The spelling of 42322661 in words is "forty-two million, three hundred twenty-two thousand, six hundred sixty-one".