1243425200 has 60 divisors (see below), whose sum is σ = 2991792888. Its totient is φ = 496627200.

The previous prime is 1243425187. The next prime is 1243425223. The reversal of 1243425200 is 25243421.

It is a happy number.

It is a super-2 number, since 2×1243425200² = 3092212455990080000, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 322484 + ... + 326316.

Almost surely, 2^1243425200 is an apocalyptic number.

1243425200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243425200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1495896444).

1243425200 is an abundant number, since it is smaller than the sum of its proper divisors (1748367688).

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

1243425200 is a wasteful number, since it uses less digits than its factorization.

1243425200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4662 (or 4651 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1243425200 is about 35262.2347561807. The cubic root of 1243425200 is about 1075.3253603228.

Adding to 1243425200 its reverse (25243421), we get a palindrome (1268668621).

The spelling of 1243425200 in words is "one billion, two hundred forty-three million, four hundred twenty-five thousand, two hundred".