1283421 has 8 divisors (see below), whose sum is σ = 1751200. Its totient is φ = 835632.

The previous prime is 1283417. The next prime is 1283437. The reversal of 1283421 is 1243821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1283421 - 2² = 1283417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4846 + ... + 5103.

It is an arithmetic number, because the mean of its divisors is an integer number (218900).

2^1283421 is an apocalyptic number.

It is an amenable number.

1283421 is a deficient number, since it is larger than the sum of its proper divisors (467779).

1283421 is an equidigital number, since it uses as much as digits as its factorization.

1283421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9995.

The product of its digits is 384, while the sum is 21.

The square root of 1283421 is about 1132.8817237470. The cubic root of 1283421 is about 108.6733480195.

The spelling of 1283421 in words is "one million, two hundred eighty-three thousand, four hundred twenty-one".