1220434424 has 16 divisors (see below), whose sum is σ = 2496343320. Its totient is φ = 554742880.

The previous prime is 1220434421. The next prime is 1220434451. The reversal of 1220434424 is 4244340221.

It is a happy number.

1220434424 is nontrivially palindromic in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 1220434393 and 1220434402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220434421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6934199 + ... + 6934374.

Almost surely, 2^1220434424 is an apocalyptic number.

It is an amenable number.

1220434424 is an abundant number, since it is smaller than the sum of its proper divisors (1275908896).

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

1220434424 is a wasteful number, since it uses less digits than its factorization.

1220434424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13868590 (or 13868586 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 1220434424 is about 34934.7166011119. The cubic root of 1220434424 is about 1068.6565443218.

Adding to 1220434424 its reverse (4244340221), we get a palindrome (5464774645).

The spelling of 1220434424 in words is "one billion, two hundred twenty million, four hundred thirty-four thousand, four hundred twenty-four".