1422512543 has 4 divisors (see below), whose sum is σ = 1438495920. Its totient is φ = 1406529168.

The previous prime is 1422512537. The next prime is 1422512561. The reversal of 1422512543 is 3452152241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1422512543 - 2¹² = 1422508447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422515543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7991555 + ... + 7991732.

It is an arithmetic number, because the mean of its divisors is an integer number (359623980).

Almost surely, 2^1422512543 is an apocalyptic number.

1422512543 is a deficient number, since it is larger than the sum of its proper divisors (15983377).

1422512543 is an equidigital number, since it uses as much as digits as its factorization.

1422512543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15983376.

The product of its digits is 9600, while the sum is 29.

The square root of 1422512543 is about 37716.2106129447. The cubic root of 1422512543 is about 1124.6534024964.

Adding to 1422512543 its reverse (3452152241), we get a palindrome (4874664784).

The spelling of 1422512543 in words is "one billion, four hundred twenty-two million, five hundred twelve thousand, five hundred forty-three".