1422191 has 2 divisors, whose sum is σ = 1422192. Its totient is φ = 1422190.

The previous prime is 1422163. The next prime is 1422193. The reversal of 1422191 is 1912241.

It is a strong prime.

It is an emirp because it is prime and its reverse (1912241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1422191 is a prime.

Together with 1422193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1422193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711095 + 711096.

It is an arithmetic number, because the mean of its divisors is an integer number (711096).

2^1422191 is an apocalyptic number.

1422191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422191 is an equidigital number, since it uses as much as digits as its factorization.

1422191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 20.

The square root of 1422191 is about 1192.5564976134. The cubic root of 1422191 is about 112.4568657683.

The spelling of 1422191 in words is "one million, four hundred twenty-two thousand, one hundred ninety-one".