1431424 has 32 divisors (see below), whose sum is σ = 2919240. Its totient is φ = 698880.

The previous prime is 1431421. The next prime is 1431439. The reversal of 1431424 is 4241341.

1431424 is nontrivially palindromic in base 7.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431421) 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, 6679 + ... + 6889.

2^1431424 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 1431424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1459620).

1431424 is an abundant number, since it is smaller than the sum of its proper divisors (1487816).

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

1431424 is an equidigital number, since it uses as much as digits as its factorization.

1431424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 266 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 1431424 is about 1196.4213304685. The cubic root of 1431424 is about 112.6997012631.

Adding to 1431424 its reverse (4241341), we get a palindrome (5672765).

The spelling of 1431424 in words is "one million, four hundred thirty-one thousand, four hundred twenty-four".