422145 has 32 divisors (see below), whose sum is σ = 777600. Its totient is φ = 217152.

The previous prime is 422141. The next prime is 422183. The reversal of 422145 is 541224.

It is not a de Polignac number, because 422145 - 2² = 422141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (422141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7126 + ... + 7184.

It is an arithmetic number, because the mean of its divisors is an integer number (24300).

2⁴²²¹⁴⁵ is an apocalyptic number.

422145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

422145 is a deficient number, since it is larger than the sum of its proper divisors (355455).

422145 is a wasteful number, since it uses less digits than its factorization.

422145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 120 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 422145 is about 649.7268656905. The cubic root of 422145 is about 75.0159965879.

Adding to 422145 its reverse (541224), we get a palindrome (963369).

It can be divided in two parts, 42 and 2145, that added together give a 7-th power (2187 = 3⁷).

The spelling of 422145 in words is "four hundred twenty-two thousand, one hundred forty-five".