1243413504 has 264 divisors, whose sum is σ = 3934170240. Its totient is φ = 391163904.

The previous prime is 1243413497. The next prime is 1243413533. The reversal of 1243413504 is 4053143421.

It is a happy number.

1243413504 is a `hidden beast` number, since 1 + 243 + 413 + 5 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4727677 + ... + 4727939.

It is an arithmetic number, because the mean of its divisors is an integer number (14902160).

Almost surely, 2^1243413504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243413504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1967085120).

1243413504 is an abundant number, since it is smaller than the sum of its proper divisors (2690756736).

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

1243413504 is an equidigital number, since it uses as much as digits as its factorization.

1243413504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 287 counting only the distinct ones).

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

The square root of 1243413504 is about 35262.0689126432. The cubic root of 1243413504 is about 1075.3219887101.

Adding to 1243413504 its reverse (4053143421), we get a palindrome (5296556925).

The spelling of 1243413504 in words is "one billion, two hundred forty-three million, four hundred thirteen thousand, five hundred four".