1223004040 has 32 divisors (see below), whose sum is σ = 2789461080. Its totient is φ = 482499072.

The previous prime is 1223004023. The next prime is 1223004053. The reversal of 1223004040 is 404003221.

It can be written as a sum of positive squares in 4 ways, for example, as 1211457636 + 11546404 = 34806^2 + 3398^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206499 + ... + 212338.

Almost surely, 2^1223004040 is an apocalyptic number.

1223004040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223004040 is an abundant number, since it is smaller than the sum of its proper divisors (1566457040).

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

1223004040 is a wasteful number, since it uses less digits than its factorization.

1223004040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418921 (or 418917 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1223004040 is about 34971.4746615009. The cubic root of 1223004040 is about 1069.4060348032.

Adding to 1223004040 its reverse (404003221), we get a palindrome (1627007261).

The spelling of 1223004040 in words is "one billion, two hundred twenty-three million, four thousand, forty".