1313421 has 8 divisors (see below), whose sum is σ = 1759680. Its totient is φ = 871392.

The previous prime is 1313383. The next prime is 1313423. The reversal of 1313421 is 1243131.

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

It is not a de Polignac number, because 1313421 - 2⁶ = 1313357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1313421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313423) 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, 241 + ... + 1638.

It is an arithmetic number, because the mean of its divisors is an integer number (219960).

2^1313421 is an apocalyptic number.

It is an amenable number.

1313421 is a deficient number, since it is larger than the sum of its proper divisors (446259).

1313421 is a wasteful number, since it uses less digits than its factorization.

1313421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115.

The product of its digits is 72, while the sum is 15.

The square root of 1313421 is about 1146.0458106027. The cubic root of 1313421 is about 109.5135822688.

Adding to 1313421 its reverse (1243131), we get a palindrome (2556552).

The spelling of 1313421 in words is "one million, three hundred thirteen thousand, four hundred twenty-one".