1420343 has 4 divisors (see below), whose sum is σ = 1422960. Its totient is φ = 1417728.

The previous prime is 1420303. The next prime is 1420357. The reversal of 1420343 is 3430241.

1420343 is nontrivially palindromic in base 3.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3430241 = 19 ⋅180539.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420343 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420303) 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, 155 + ... + 1692.

It is an arithmetic number, because the mean of its divisors is an integer number (355740).

2^1420343 is an apocalyptic number.

1420343 is a deficient number, since it is larger than the sum of its proper divisors (2617).

1420343 is an equidigital number, since it uses as much as digits as its factorization.

1420343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1420343 is about 1191.7814396944. The cubic root of 1420343 is about 112.4081357062.

Adding to 1420343 its reverse (3430241), we get a palindrome (4850584).

The spelling of 1420343 in words is "one million, four hundred twenty thousand, three hundred forty-three".