1420843 has 4 divisors (see below), whose sum is σ = 1504440. Its totient is φ = 1337248.

The previous prime is 1420841. The next prime is 1420847. The reversal of 1420843 is 3480241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3480241 = 173 ⋅20117.

It is a cyclic number.

It is not a de Polignac number, because 1420843 - 2¹ = 1420841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420841) 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, 41773 + ... + 41806.

It is an arithmetic number, because the mean of its divisors is an integer number (376110).

2^1420843 is an apocalyptic number.

1420843 is a deficient number, since it is larger than the sum of its proper divisors (83597).

1420843 is an equidigital number, since it uses as much as digits as its factorization.

1420843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83596.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1420843 is about 1191.9911912426. The cubic root of 1420843 is about 112.4213244158.

The spelling of 1420843 in words is "one million, four hundred twenty thousand, eight hundred forty-three".