1421744 has 20 divisors (see below), whose sum is σ = 2917224. Its totient is φ = 668928.

The previous prime is 1421741. The next prime is 1421747. The reversal of 1421744 is 4471241.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1421741) and next prime (1421747).

It is not an unprimeable number, because it can be changed into a prime (1421741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2342 + ... + 2885.

2^1421744 is an apocalyptic number.

It is an amenable number.

1421744 is an abundant number, since it is smaller than the sum of its proper divisors (1495480).

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

1421744 is a wasteful number, since it uses less digits than its factorization.

1421744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5252 (or 5246 counting only the distinct ones).

The product of its digits is 896, while the sum is 23.

The square root of 1421744 is about 1192.3690703805. The cubic root of 1421744 is about 112.4450826613.

Adding to 1421744 its reverse (4471241), we get a palindrome (5892985).

The spelling of 1421744 in words is "one million, four hundred twenty-one thousand, seven hundred forty-four".