42272651 has 2 divisors, whose sum is σ = 42272652. Its totient is φ = 42272650.

The previous prime is 42272639. The next prime is 42272653. The reversal of 42272651 is 15627224.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42272651 is a prime.

Together with 42272653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42272653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21136325 + 21136326.

It is an arithmetic number, because the mean of its divisors is an integer number (21136326).

Almost surely, 2^42272651 is an apocalyptic number.

42272651 is a deficient number, since it is larger than the sum of its proper divisors (1).

42272651 is an equidigital number, since it uses as much as digits as its factorization.

42272651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 29.

The square root of 42272651 is about 6501.7421511469. The cubic root of 42272651 is about 348.3532190037.

Adding to 42272651 its reverse (15627224), we get a palindrome (57899875).

The spelling of 42272651 in words is "forty-two million, two hundred seventy-two thousand, six hundred fifty-one".