42186227 has 2 divisors, whose sum is σ = 42186228. Its totient is φ = 42186226.

The previous prime is 42186211. The next prime is 42186233. The reversal of 42186227 is 72268124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42186227 - 2⁴ = 42186211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42186193 and 42186202.

It is not a weakly prime, because it can be changed into another prime (42186427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21093113 + 21093114.

It is an arithmetic number, because the mean of its divisors is an integer number (21093114).

Almost surely, 2^42186227 is an apocalyptic number.

42186227 is a deficient number, since it is larger than the sum of its proper divisors (1).

42186227 is an equidigital number, since it uses as much as digits as its factorization.

42186227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 32.

The square root of 42186227 is about 6495.0925320583. The cubic root of 42186227 is about 348.1156610087.

The spelling of 42186227 in words is "forty-two million, one hundred eighty-six thousand, two hundred twenty-seven".