42224393 has 2 divisors, whose sum is σ = 42224394. Its totient is φ = 42224392.

The previous prime is 42224333. The next prime is 42224401. The reversal of 42224393 is 39342224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23931664 + 18292729 = 4892^2 + 4277^2 .

It is a cyclic number.

It is not a de Polignac number, because 42224393 - 2¹⁰ = 42223369 is a prime.

It is not a weakly prime, because it can be changed into another prime (42224333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21112196 + 21112197.

It is an arithmetic number, because the mean of its divisors is an integer number (21112197).

Almost surely, 2^42224393 is an apocalyptic number.

It is an amenable number.

42224393 is a deficient number, since it is larger than the sum of its proper divisors (1).

42224393 is an equidigital number, since it uses as much as digits as its factorization.

42224393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 29.

The square root of 42224393 is about 6498.0299322179. The cubic root of 42224393 is about 348.2206097766.

The spelling of 42224393 in words is "forty-two million, two hundred twenty-four thousand, three hundred ninety-three".