1224420401 has 4 divisors (see below), whose sum is σ = 1288863600. Its totient is φ = 1159977204.

The previous prime is 1224420349. The next prime is 1224420413. The reversal of 1224420401 is 1040244221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1224420401 - 2¹⁰ = 1224419377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224620401) 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, 32221571 + ... + 32221608.

It is an arithmetic number, because the mean of its divisors is an integer number (322215900).

Almost surely, 2^1224420401 is an apocalyptic number.

It is an amenable number.

1224420401 is a deficient number, since it is larger than the sum of its proper divisors (64443199).

1224420401 is an equidigital number, since it uses as much as digits as its factorization.

1224420401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64443198.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1224420401 is about 34991.7190346516. The cubic root of 1224420401 is about 1069.8187019235.

Adding to 1224420401 its reverse (1040244221), we get a palindrome (2264664622).

The spelling of 1224420401 in words is "one billion, two hundred twenty-four million, four hundred twenty thousand, four hundred one".