422666452 has 18 divisors (see below), whose sum is σ = 796843194. Its totient is φ = 195008400.

The previous prime is 422666449. The next prime is 422666459. The reversal of 422666452 is 254666224.

It can be written as a sum of positive squares in only one way, i.e., 292615236 + 130051216 = 17106^2 + 11404^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422666459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 146827 + ... + 149677.

Almost surely, 2^422666452 is an apocalyptic number.

It is an amenable number.

422666452 is a deficient number, since it is larger than the sum of its proper divisors (374176742).

422666452 is an equidigital number, since it uses as much as digits as its factorization.

422666452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5719 (or 2866 counting only the distinct ones).

The product of its digits is 138240, while the sum is 37.

The square root of 422666452 is about 20558.8533726957. The cubic root of 422666452 is about 750.4687156058.

The spelling of 422666452 in words is "four hundred twenty-two million, six hundred sixty-six thousand, four hundred fifty-two".