42219017 has 2 divisors, whose sum is σ = 42219018. Its totient is φ = 42219016.

The previous prime is 42219013. The next prime is 42219059. The reversal of 42219017 is 71091224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41011216 + 1207801 = 6404^2 + 1099^2 .

It is a cyclic number.

It is not a de Polignac number, because 42219017 - 2² = 42219013 is a prime.

It is not a weakly prime, because it can be changed into another prime (42219013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21109508 + 21109509.

It is an arithmetic number, because the mean of its divisors is an integer number (21109509).

Almost surely, 2^42219017 is an apocalyptic number.

It is an amenable number.

42219017 is a deficient number, since it is larger than the sum of its proper divisors (1).

42219017 is an equidigital number, since it uses as much as digits as its factorization.

42219017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 42219017 is about 6497.6162552124. The cubic root of 42219017 is about 348.2058306934.

The spelling of 42219017 in words is "forty-two million, two hundred nineteen thousand, seventeen".