1436321 has 4 divisors (see below), whose sum is σ = 1450644. Its totient is φ = 1422000.

The previous prime is 1436311. The next prime is 1436333. The reversal of 1436321 is 1236341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1236341 = 101 ⋅12241.

It can be written as a sum of positive squares in 2 ways, for example, as 1221025 + 215296 = 1105^2 + 464^2 .

It is a cyclic number.

It is not a de Polignac number, because 1436321 - 2⁶ = 1436257 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1436293 and 1436302.

It is not an unprimeable number, because it can be changed into a prime (1436311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7010 + ... + 7211.

It is an arithmetic number, because the mean of its divisors is an integer number (362661).

2^1436321 is an apocalyptic number.

It is an amenable number.

1436321 is a deficient number, since it is larger than the sum of its proper divisors (14323).

1436321 is a wasteful number, since it uses less digits than its factorization.

1436321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14322.

The product of its digits is 432, while the sum is 20.

The square root of 1436321 is about 1198.4661029833. The cubic root of 1436321 is about 112.8280727959.

Adding to 1436321 its sum of digits (20), we get a palindrome (1436341).

The spelling of 1436321 in words is "one million, four hundred thirty-six thousand, three hundred twenty-one".