42226829 has 2 divisors, whose sum is σ = 42226830. Its totient is φ = 42226828.

The previous prime is 42226819. The next prime is 42226883. The reversal of 42226829 is 92862224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38105929 + 4120900 = 6173^2 + 2030^2 .

It is a cyclic number.

It is not a de Polignac number, because 42226829 - 2⁸ = 42226573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42226819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21113414 + 21113415.

It is an arithmetic number, because the mean of its divisors is an integer number (21113415).

Almost surely, 2^42226829 is an apocalyptic number.

It is an amenable number.

42226829 is a deficient number, since it is larger than the sum of its proper divisors (1).

42226829 is an equidigital number, since it uses as much as digits as its factorization.

42226829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 35.

The square root of 42226829 is about 6498.2173709410. The cubic root of 42226829 is about 348.2273061357.

The spelling of 42226829 in words is "forty-two million, two hundred twenty-six thousand, eight hundred twenty-nine".