1303421 has 8 divisors (see below), whose sum is σ = 1509120. Its totient is φ = 1102608.

The previous prime is 1303417. The next prime is 1303427. The reversal of 1303421 is 1243031.

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

It is a cyclic number.

It is not a de Polignac number, because 1303421 - 2² = 1303417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1303396 and 1303405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303427) 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, 626 + ... + 1731.

It is an arithmetic number, because the mean of its divisors is an integer number (188640).

2^1303421 is an apocalyptic number.

It is an amenable number.

1303421 is a deficient number, since it is larger than the sum of its proper divisors (205699).

1303421 is an equidigital number, since it uses as much as digits as its factorization.

1303421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1303421 is about 1141.6746471741. The cubic root of 1303421 is about 109.2349391971.

Adding to 1303421 its reverse (1243031), we get a palindrome (2546452).

The spelling of 1303421 in words is "one million, three hundred three thousand, four hundred twenty-one".