1001200 has 30 divisors (see below), whose sum is σ = 2406344. Its totient is φ = 400320.

The previous prime is 1001197. The next prime is 1001219. The reversal of 1001200 is 21001.

It is a Harshad number since it is a multiple of its sum of digits (4).

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 1001200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 852 + ... + 1651.

2^1001200 is an apocalyptic number.

1001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001200 is an abundant number, since it is smaller than the sum of its proper divisors (1405144).

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

1001200 is a wasteful number, since it uses less digits than its factorization.

1001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521 (or 2510 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 1001200 is about 1000.5998201079. The cubic root of 1001200 is about 100.0399840107.

Adding to 1001200 its reverse (21001), we get a palindrome (1022201).

The spelling of 1001200 in words is "one million, one thousand, two hundred".