1122143423 has 4 divisors (see below), whose sum is σ = 1122210648. Its totient is φ = 1122076200.

The previous prime is 1122143419. The next prime is 1122143447. The reversal of 1122143423 is 3243412211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1122143423 - 2² = 1122143419 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 (1122143723) 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, 12665 + ... + 49037.

It is an arithmetic number, because the mean of its divisors is an integer number (280552662).

Almost surely, 2^1122143423 is an apocalyptic number.

1122143423 is a deficient number, since it is larger than the sum of its proper divisors (67225).

1122143423 is an equidigital number, since it uses as much as digits as its factorization.

1122143423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67224.

The product of its digits is 1152, while the sum is 23.

The square root of 1122143423 is about 33498.4092607395. The cubic root of 1122143423 is about 1039.1608810202.

Adding to 1122143423 its reverse (3243412211), we get a palindrome (4365555634).

The spelling of 1122143423 in words is "one billion, one hundred twenty-two million, one hundred forty-three thousand, four hundred twenty-three".