1243200444 has 24 divisors (see below), whose sum is σ = 2979202128. Its totient is φ = 403200000.

The previous prime is 1243200443. The next prime is 1243200461. The reversal of 1243200444 is 4440023421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243200443) 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, 1399557 + ... + 1400444.

It is an arithmetic number, because the mean of its divisors is an integer number (124133422).

Almost surely, 2^1243200444 is an apocalyptic number.

It is an amenable number.

1243200444 is an abundant number, since it is smaller than the sum of its proper divisors (1736001684).

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

1243200444 is a wasteful number, since it uses less digits than its factorization.

1243200444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800045 (or 2800043 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1243200444 is about 35259.0476899193. The cubic root of 1243200444 is about 1075.2605660781.

Adding to 1243200444 its reverse (4440023421), we get a palindrome (5683223865).

The spelling of 1243200444 in words is "one billion, two hundred forty-three million, two hundred thousand, four hundred forty-four".