42222049 has 2 divisors, whose sum is σ = 42222050. Its totient is φ = 42222048.

The previous prime is 42222041. The next prime is 42222073. The reversal of 42222049 is 94022224.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30195025 + 12027024 = 5495^2 + 3468^2 .

It is a cyclic number.

It is not a de Polignac number, because 42222049 - 2³ = 42222041 is a prime.

It is not a weakly prime, because it can be changed into another prime (42222041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21111024 + 21111025.

It is an arithmetic number, because the mean of its divisors is an integer number (21111025).

Almost surely, 2^42222049 is an apocalyptic number.

It is an amenable number.

42222049 is a deficient number, since it is larger than the sum of its proper divisors (1).

42222049 is an equidigital number, since it uses as much as digits as its factorization.

42222049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 42222049 is about 6497.8495673569. The cubic root of 42222049 is about 348.2141660747.

The spelling of 42222049 in words is "forty-two million, two hundred twenty-two thousand, forty-nine".