1224543345 has 16 divisors (see below), whose sum is σ = 2044455552. Its totient is φ = 624694400.

The previous prime is 1224543343. The next prime is 1224543347. The reversal of 1224543345 is 5433454221.

It is an interprime number because it is at equal distance from previous prime (1224543343) and next prime (1224543347).

It is not a de Polignac number, because 1224543345 - 2¹ = 1224543343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1224543343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1774356 + ... + 1775045.

It is an arithmetic number, because the mean of its divisors is an integer number (127778472).

Almost surely, 2^1224543345 is an apocalyptic number.

1224543345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1224543345 is a deficient number, since it is larger than the sum of its proper divisors (819912207).

1224543345 is a wasteful number, since it uses less digits than its factorization.

1224543345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3549432.

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

The square root of 1224543345 is about 34993.4757490593. The cubic root of 1224543345 is about 1069.8545075417.

Adding to 1224543345 its reverse (5433454221), we get a palindrome (6657997566).

The spelling of 1224543345 in words is "one billion, two hundred twenty-four million, five hundred forty-three thousand, three hundred forty-five".