1224143045 has 6 divisors (see below), whose sum is σ = 1469065542. Its totient is φ = 979251848.

The previous prime is 1224143029. The next prime is 1224143047. The reversal of 1224143045 is 5403414221.

It can be written as a sum of positive squares in only one way, i.e., 979314436 + 244828609 = 31294^2 + 15647^2 .

It is not a de Polignac number, because 1224143045 - 2⁴ = 1224143029 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 (1224143047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70412 + ... + 86058.

It is an arithmetic number, because the mean of its divisors is an integer number (244844257).

Almost surely, 2^1224143045 is an apocalyptic number.

It is an amenable number.

1224143045 is a deficient number, since it is larger than the sum of its proper divisors (244922497).

1224143045 is an frugal number, since it uses more digits than its factorization.

1224143045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31299 (or 15652 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1224143045 is about 34987.7556439392. The cubic root of 1224143045 is about 1069.7379172946.

Adding to 1224143045 its reverse (5403414221), we get a palindrome (6627557266).

The spelling of 1224143045 in words is "one billion, two hundred twenty-four million, one hundred forty-three thousand, forty-five".