42421241 has 2 divisors, whose sum is σ = 42421242. Its totient is φ = 42421240.

The previous prime is 42421231. The next prime is 42421279. The reversal of 42421241 is 14212424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41925625 + 495616 = 6475^2 + 704^2 .

It is a cyclic number.

It is not a de Polignac number, because 42421241 - 2¹⁸ = 42159097 is a prime.

It is not a weakly prime, because it can be changed into another prime (42421201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21210620 + 21210621.

It is an arithmetic number, because the mean of its divisors is an integer number (21210621).

Almost surely, 2^42421241 is an apocalyptic number.

It is an amenable number.

42421241 is a deficient number, since it is larger than the sum of its proper divisors (1).

42421241 is an equidigital number, since it uses as much as digits as its factorization.

42421241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 512, while the sum is 20.

The square root of 42421241 is about 6513.1590645400. The cubic root of 42421241 is about 348.7609000417.

Adding to 42421241 its reverse (14212424), we get a palindrome (56633665).

The spelling of 42421241 in words is "forty-two million, four hundred twenty-one thousand, two hundred forty-one".