42272771 has 2 divisors, whose sum is σ = 42272772. Its totient is φ = 42272770.

The previous prime is 42272743. The next prime is 42272801. The reversal of 42272771 is 17727224.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42272771 - 2¹⁴ = 42256387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42272071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21136385 + 21136386.

It is an arithmetic number, because the mean of its divisors is an integer number (21136386).

Almost surely, 2^42272771 is an apocalyptic number.

42272771 is a deficient number, since it is larger than the sum of its proper divisors (1).

42272771 is an equidigital number, since it uses as much as digits as its factorization.

42272771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10976, while the sum is 32.

The square root of 42272771 is about 6501.7513794362. The cubic root of 42272771 is about 348.3535486285.

Adding to 42272771 its reverse (17727224), we get a palindrome (59999995).

The spelling of 42272771 in words is "forty-two million, two hundred seventy-two thousand, seven hundred seventy-one".