1224345543 has 8 divisors (see below), whose sum is σ = 1649290608. Its totient is φ = 807815424.

The previous prime is 1224345517. The next prime is 1224345581. The reversal of 1224345543 is 3455434221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1224345543 - 2¹⁷ = 1224214471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224345743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2103396 + ... + 2103977.

It is an arithmetic number, because the mean of its divisors is an integer number (206161326).

Almost surely, 2^1224345543 is an apocalyptic number.

1224345543 is a deficient number, since it is larger than the sum of its proper divisors (424945065).

1224345543 is an equidigital number, since it uses as much as digits as its factorization.

1224345543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207473.

The product of its digits is 57600, while the sum is 33.

The square root of 1224345543 is about 34990.6493652233. The cubic root of 1224345543 is about 1069.7968994662.

Adding to 1224345543 its reverse (3455434221), we get a palindrome (4679779764).

The spelling of 1224345543 in words is "one billion, two hundred twenty-four million, three hundred forty-five thousand, five hundred forty-three".