421038227 has 2 divisors, whose sum is σ = 421038228. Its totient is φ = 421038226.

The previous prime is 421038221. The next prime is 421038313. The reversal of 421038227 is 722830124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421038227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421038227.

It is not a weakly prime, because it can be changed into another prime (421038221) 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, 210519113 + 210519114.

It is an arithmetic number, because the mean of its divisors is an integer number (210519114).

Almost surely, 2^421038227 is an apocalyptic number.

421038227 is a deficient number, since it is larger than the sum of its proper divisors (1).

421038227 is an equidigital number, since it uses as much as digits as its factorization.

421038227 is an odious number, because the sum of its binary digits is odd.

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

The square root of 421038227 is about 20519.2160425295. The cubic root of 421038227 is about 749.5038063133.

The spelling of 421038227 in words is "four hundred twenty-one million, thirty-eight thousand, two hundred twenty-seven".