1243504413 has 8 divisors (see below), whose sum is σ = 1842228800. Its totient is φ = 829002924.

The previous prime is 1243504403. The next prime is 1243504469. The reversal of 1243504413 is 3144053421.

It is a happy number.

1243504413 is a `hidden beast` number, since 1 + 243 + 5 + 0 + 4 + 413 = 666.

It is not a de Polignac number, because 1243504413 - 2⁶ = 1243504349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 46055719 = 1243504413 / (1 + 2 + 4 + 3 + 5 + 0 + 4 + 4 + 1 + 3).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243504403) 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 7 ways as a sum of consecutive naturals, for example, 23027833 + ... + 23027886.

It is an arithmetic number, because the mean of its divisors is an integer number (230278600).

Almost surely, 2^1243504413 is an apocalyptic number.

It is an amenable number.

1243504413 is a deficient number, since it is larger than the sum of its proper divisors (598724387).

1243504413 is an equidigital number, since it uses as much as digits as its factorization.

1243504413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46055728 (or 46055722 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1243504413 is about 35263.3579370995. The cubic root of 1243504413 is about 1075.3481945442.

Adding to 1243504413 its reverse (3144053421), we get a palindrome (4387557834).

The spelling of 1243504413 in words is "one billion, two hundred forty-three million, five hundred four thousand, four hundred thirteen".