42226169 has 2 divisors, whose sum is σ = 42226170. Its totient is φ = 42226168.

The previous prime is 42226141. The next prime is 42226199. The reversal of 42226169 is 96162224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37982569 + 4243600 = 6163^2 + 2060^2 .

It is a cyclic number.

It is not a de Polignac number, because 42226169 - 2¹² = 42222073 is a prime.

It is a super-2 number, since 2×42226169² = 3566098696833122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42226199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21113084 + 21113085.

It is an arithmetic number, because the mean of its divisors is an integer number (21113085).

Almost surely, 2^42226169 is an apocalyptic number.

It is an amenable number.

42226169 is a deficient number, since it is larger than the sum of its proper divisors (1).

42226169 is an equidigital number, since it uses as much as digits as its factorization.

42226169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 42226169 is about 6498.1665875845. The cubic root of 42226169 is about 348.2254918767.

The spelling of 42226169 in words is "forty-two million, two hundred twenty-six thousand, one hundred sixty-nine".