42244057 has 2 divisors, whose sum is σ = 42244058.
Its totient is φ = 42244056.
The previous prime is 42244009. The next prime is 42244061. The reversal of 42244057 is 75044224.
It is a happy number.
42244057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 42237001 + 7056 = 6499^2 + 84^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-42244057 is a prime.
It is not a weakly prime, because it can be changed into another prime (42244067) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21122028 + 21122029.
It is an arithmetic number, because the mean of its divisors is an integer number (21122029).
Almost surely, 242244057 is an apocalyptic number.
It is an amenable number.
42244057 is a deficient number, since it is larger than the sum of its proper divisors (1).
42244057 is an equidigital number, since it uses as much as digits as its factorization.
42244057 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 8960, while the sum is 28.
The square root of 42244057 is about 6499.5428300766.
The cubic root of 42244057 is about 348.2746571089.
It can be divided in two parts, 4224 and 4057, that added together give a square (8281 = 912).
The spelling of 42244057 in words is "forty-two million, two hundred forty-four thousand, fifty-seven".