422145445 has 16 divisors (see below), whose sum is σ = 553678848. Its totient is φ = 307595520.

The previous prime is 422145443. The next prime is 422145487. The reversal of 422145445 is 544541224.

It is not a de Polignac number, because 422145445 - 2¹ = 422145443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422145443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77469 + ... + 82738.

It is an arithmetic number, because the mean of its divisors is an integer number (34604928).

Almost surely, 2^422145445 is an apocalyptic number.

It is an amenable number.

422145445 is a deficient number, since it is larger than the sum of its proper divisors (131533403).

422145445 is a wasteful number, since it uses less digits than its factorization.

422145445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160260.

The product of its digits is 25600, while the sum is 31.

The square root of 422145445 is about 20546.1783551102. The cubic root of 422145445 is about 750.1602294700.

Adding to 422145445 its reverse (544541224), we get a palindrome (966686669).

The spelling of 422145445 in words is "four hundred twenty-two million, one hundred forty-five thousand, four hundred forty-five".