42228371 has 2 divisors, whose sum is σ = 42228372. Its totient is φ = 42228370.

The previous prime is 42228349. The next prime is 42228421. The reversal of 42228371 is 17382224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42228371 - 2¹⁰ = 42227347 is a prime.

It is not a weakly prime, because it can be changed into another prime (42228301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21114185 + 21114186.

It is an arithmetic number, because the mean of its divisors is an integer number (21114186).

Almost surely, 2^42228371 is an apocalyptic number.

42228371 is a deficient number, since it is larger than the sum of its proper divisors (1).

42228371 is an equidigital number, since it uses as much as digits as its factorization.

42228371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 29.

The square root of 42228371 is about 6498.3360177818. The cubic root of 42228371 is about 348.2315448309.

The spelling of 42228371 in words is "forty-two million, two hundred twenty-eight thousand, three hundred seventy-one".