1224403421 has 8 divisors (see below), whose sum is σ = 1234778688. Its totient is φ = 1214044000.

The previous prime is 1224403417. The next prime is 1224403423. The reversal of 1224403421 is 1243044221.

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

It is a cyclic number.

It is not a de Polignac number, because 1224403421 - 2² = 1224403417 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 (1224403423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190856 + ... + 197166.

It is an arithmetic number, because the mean of its divisors is an integer number (154347336).

Almost surely, 2^1224403421 is an apocalyptic number.

It is an amenable number.

1224403421 is a deficient number, since it is larger than the sum of its proper divisors (10375267).

1224403421 is a wasteful number, since it uses less digits than its factorization.

1224403421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7923.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1224403421 is about 34991.4764049761. The cubic root of 1224403421 is about 1069.8137565617.

Adding to 1224403421 its reverse (1243044221), we get a palindrome (2467447642).

The spelling of 1224403421 in words is "one billion, two hundred twenty-four million, four hundred three thousand, four hundred twenty-one".