1421244 has 72 divisors (see below), whose sum is σ = 4066608. Its totient is φ = 414720.

The previous prime is 1421243. The next prime is 1421249. The reversal of 1421244 is 4421241.

1421244 is a `hidden beast` number, since 1 + 421 + 244 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14604 + ... + 14700.

2^1421244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2033304).

1421244 is an abundant number, since it is smaller than the sum of its proper divisors (2645364).

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

1421244 is a wasteful number, since it uses less digits than its factorization.

1421244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 150 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 1421244 is about 1192.1593853172. The cubic root of 1421244 is about 112.4318995253.

Adding to 1421244 its reverse (4421241), we get a palindrome (5842485).

The spelling of 1421244 in words is "one million, four hundred twenty-one thousand, two hundred forty-four".