1220424004 has 12 divisors (see below), whose sum is σ = 2176039404. Its totient is φ = 598698464.

The previous prime is 1220423989. The next prime is 1220424013. The reversal of 1220424004 is 4004240221.

It can be written as a sum of positive squares in 2 ways, for example, as 710115904 + 510308100 = 26648^2 + 22590^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2878147 + ... + 2878570.

It is an arithmetic number, because the mean of its divisors is an integer number (181336617).

Almost surely, 2^1220424004 is an apocalyptic number.

It is an amenable number.

1220424004 is a deficient number, since it is larger than the sum of its proper divisors (955615400).

1220424004 is a wasteful number, since it uses less digits than its factorization.

1220424004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5756774 (or 5756772 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1220424004 is about 34934.5674654775. The cubic root of 1220424004 is about 1068.6535029367.

Adding to 1220424004 its reverse (4004240221), we get a palindrome (5224664225).

The spelling of 1220424004 in words is "one billion, two hundred twenty million, four hundred twenty-four thousand, four".