1273220004 has 24 divisors (see below), whose sum is σ = 3395253568. Its totient is φ = 363777120.

The previous prime is 1273219967. The next prime is 1273220017. The reversal of 1273220004 is 4000223721.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7578607 + ... + 7578774.

Almost surely, 2^1273220004 is an apocalyptic number.

1273220004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1273220004 is an abundant number, since it is smaller than the sum of its proper divisors (2122033564).

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

1273220004 is a wasteful number, since it uses less digits than its factorization.

1273220004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15157395 (or 15157393 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 1273220004 is about 35682.2085078825. The cubic root of 1273220004 is about 1083.8465955309.

Adding to 1273220004 its reverse (4000223721), we get a palindrome (5273443725).

The spelling of 1273220004 in words is "one billion, two hundred seventy-three million, two hundred twenty thousand, four".