1042443200 has 84 divisors (see below), whose sum is σ = 2647931712. Its totient is φ = 403507200.

The previous prime is 1042443161. The next prime is 1042443203. The reversal of 1042443200 is 23442401.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042443203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39092 + ... + 60108.

Almost surely, 2^1042443200 is an apocalyptic number.

1042443200 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 1042443200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1323965856).

1042443200 is an abundant number, since it is smaller than the sum of its proper divisors (1605488512).

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

1042443200 is a wasteful number, since it uses less digits than its factorization.

1042443200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21070 (or 21055 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1042443200 is about 32286.8889798940. Note that the first 3 decimals coincide. The cubic root of 1042443200 is about 1013.9521650993.

Adding to 1042443200 its reverse (23442401), we get a palindrome (1065885601).

The spelling of 1042443200 in words is "one billion, forty-two million, four hundred forty-three thousand, two hundred".