1421200 has 120 divisors (see below), whose sum is σ = 4151520. Its totient is φ = 460800.

The previous prime is 1421191. The next prime is 1421213. The reversal of 1421200 is 21241.

It is a Harshad number since it is a multiple of its sum of digits (10).

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 23 ways as a sum of consecutive naturals, for example, 74791 + ... + 74809.

It is an arithmetic number, because the mean of its divisors is an integer number (34596).

2^1421200 is an apocalyptic number.

1421200 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 1421200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2075760).

1421200 is an abundant number, since it is smaller than the sum of its proper divisors (2730320).

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

1421200 is a wasteful number, since it uses less digits than its factorization.

1421200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1421200 is about 1192.1409312661. The cubic root of 1421200 is about 112.4307392613.

Adding to 1421200 its reverse (21241), we get a palindrome (1442441).

It can be divided in two parts, 1 and 421200, that added together give a square (421201 = 649²).

The spelling of 1421200 in words is "one million, four hundred twenty-one thousand, two hundred".