1421544 has 32 divisors (see below), whose sum is σ = 3615840. Its totient is φ = 465600.

The previous prime is 1421543. The next prime is 1421549. The reversal of 1421544 is 4451241.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421544.

It is not an unprimeable number, because it can be changed into a prime (1421543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 979 + ... + 1949.

It is an arithmetic number, because the mean of its divisors is an integer number (112995).

2^1421544 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 1421544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1807920).

1421544 is an abundant number, since it is smaller than the sum of its proper divisors (2194296).

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

1421544 is a wasteful number, since it uses less digits than its factorization.

1421544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041 (or 1037 counting only the distinct ones).

The product of its digits is 640, while the sum is 21.

The square root of 1421544 is about 1192.2852007804. The cubic root of 1421544 is about 112.4398097778.

Adding to 1421544 its reverse (4451241), we get a palindrome (5872785).

The spelling of 1421544 in words is "one million, four hundred twenty-one thousand, five hundred forty-four".