1316421 has 12 divisors (see below), whose sum is σ = 1920672. Its totient is φ = 868776.

The previous prime is 1316417. The next prime is 1316431. The reversal of 1316421 is 1246131.

It is a happy number.

1316421 is nontrivially palindromic in base 8.

It is not a de Polignac number, because 1316421 - 2² = 1316417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1316394 and 1316403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280 + ... + 1646.

It is an arithmetic number, because the mean of its divisors is an integer number (160056).

2^1316421 is an apocalyptic number.

It is an amenable number.

1316421 is a deficient number, since it is larger than the sum of its proper divisors (604251).

1316421 is a wasteful number, since it uses less digits than its factorization.

1316421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480 (or 1477 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1316421 is about 1147.3539122694. The cubic root of 1316421 is about 109.5968992765.

The spelling of 1316421 in words is "one million, three hundred sixteen thousand, four hundred twenty-one".