422154071 has 2 divisors, whose sum is σ = 422154072. Its totient is φ = 422154070.

The previous prime is 422154067. The next prime is 422154133. The reversal of 422154071 is 170451224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 422154071 - 2² = 422154067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 422154071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422154011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211077035 + 211077036.

It is an arithmetic number, because the mean of its divisors is an integer number (211077036).

Almost surely, 2^422154071 is an apocalyptic number.

422154071 is a deficient number, since it is larger than the sum of its proper divisors (1).

422154071 is an equidigital number, since it uses as much as digits as its factorization.

422154071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 422154071 is about 20546.3882714213. The cubic root of 422154071 is about 750.1653389554.

The spelling of 422154071 in words is "four hundred twenty-two million, one hundred fifty-four thousand, seventy-one".