1224420426 has 48 divisors (see below), whose sum is σ = 2789453160. Its totient is φ = 387596160.

The previous prime is 1224420413. The next prime is 1224420443. The reversal of 1224420426 is 6240244221.

It can be written as a sum of positive squares in 4 ways, for example, as 750705201 + 473715225 = 27399^2 + 21765^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1224420426.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12616 + ... + 51068.

Almost surely, 2^1224420426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1224420426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1394726580).

1224420426 is an abundant number, since it is smaller than the sum of its proper divisors (1565032734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1224420426 is a wasteful number, since it uses less digits than its factorization.

1224420426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38551 (or 38548 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 1224420426 is about 34991.7193918790. The cubic root of 1224420426 is about 1069.8187092046.

Adding to 1224420426 its reverse (6240244221), we get a palindrome (7464664647).

The spelling of 1224420426 in words is "one billion, two hundred twenty-four million, four hundred twenty thousand, four hundred twenty-six".