422143091 has 2 divisors, whose sum is σ = 422143092. Its totient is φ = 422143090.

The previous prime is 422143019. The next prime is 422143153. The reversal of 422143091 is 190341224.

Together with previous prime (422143019) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 422143091 - 2¹⁴ = 422126707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 422143091.

It is not a weakly prime, because it can be changed into another prime (422143591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211071545 + 211071546.

It is an arithmetic number, because the mean of its divisors is an integer number (211071546).

Almost surely, 2^422143091 is an apocalyptic number.

422143091 is a deficient number, since it is larger than the sum of its proper divisors (1).

422143091 is an equidigital number, since it uses as much as digits as its factorization.

422143091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 422143091 is about 20546.1210694379. The cubic root of 422143091 is about 750.1588351002.

The spelling of 422143091 in words is "four hundred twenty-two million, one hundred forty-three thousand, ninety-one".