422145670 has 8 divisors (see below), whose sum is σ = 759862224. Its totient is φ = 168858264.

The previous prime is 422145637. The next prime is 422145677. The reversal of 422145670 is 76541224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422145677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21107274 + ... + 21107293.

It is an arithmetic number, because the mean of its divisors is an integer number (94982778).

Almost surely, 2^422145670 is an apocalyptic number.

422145670 is a deficient number, since it is larger than the sum of its proper divisors (337716554).

422145670 is a wasteful number, since it uses less digits than its factorization.

422145670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42214574.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 422145670 is about 20546.1838305803. The cubic root of 422145670 is about 750.1603627463.

Adding to 422145670 its reverse (76541224), we get a palindrome (498686894).

The spelling of 422145670 in words is "four hundred twenty-two million, one hundred forty-five thousand, six hundred seventy".