1424430 has 144 divisors (see below), whose sum is σ = 4801680. Its totient is φ = 290304.

The previous prime is 1424417. The next prime is 1424431. The reversal of 1424430 is 344241.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1424431) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 74961 + ... + 74979.

It is an arithmetic number, because the mean of its divisors is an integer number (33345).

2^1424430 is an apocalyptic number.

1424430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1424430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2400840).

1424430 is an abundant number, since it is smaller than the sum of its proper divisors (3377250).

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

1424430 is a wasteful number, since it uses less digits than its factorization.

1424430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1424430 is about 1193.4948680242. The cubic root of 1424430 is about 112.5158496188.

Adding to 1424430 its reverse (344241), we get a palindrome (1768671).

The spelling of 1424430 in words is "one million, four hundred twenty-four thousand, four hundred thirty".