422543145 has 32 divisors (see below), whose sum is σ = 696060288. Its totient is φ = 218723328.

The previous prime is 422543141. The next prime is 422543153. The reversal of 422543145 is 541345224.

It is not a de Polignac number, because 422543145 - 2² = 422543141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (422543141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 325137 + ... + 326433.

It is an arithmetic number, because the mean of its divisors is an integer number (21751884).

Almost surely, 2^422543145 is an apocalyptic number.

It is an amenable number.

422543145 is a deficient number, since it is larger than the sum of its proper divisors (273517143).

422543145 is a wasteful number, since it uses less digits than its factorization.

422543145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929.

The product of its digits is 19200, while the sum is 30.

The square root of 422543145 is about 20555.8542756072. The cubic root of 422543145 is about 750.3957289392.

Adding to 422543145 its reverse (541345224), we get a palindrome (963888369).

The spelling of 422543145 in words is "four hundred twenty-two million, five hundred forty-three thousand, one hundred forty-five".