1224004043 has 4 divisors (see below), whose sum is σ = 1224112128. Its totient is φ = 1223895960.

The previous prime is 1224004027. The next prime is 1224004057. The reversal of 1224004043 is 3404004221.

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 1224004043 - 2⁴ = 1224004027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224004013) 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, 34763 + ... + 60468.

It is an arithmetic number, because the mean of its divisors is an integer number (306028032).

Almost surely, 2^1224004043 is an apocalyptic number.

1224004043 is a deficient number, since it is larger than the sum of its proper divisors (108085).

1224004043 is an equidigital number, since it uses as much as digits as its factorization.

1224004043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108084.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1224004043 is about 34985.7691497557. The cubic root of 1224004043 is about 1069.6974260194.

Adding to 1224004043 its reverse (3404004221), we get a palindrome (4628008264).

The spelling of 1224004043 in words is "one billion, two hundred twenty-four million, four thousand, forty-three".