1440213 has 4 divisors (see below), whose sum is σ = 1920288. Its totient is φ = 960140.

The previous prime is 1440211. The next prime is 1440233. The reversal of 1440213 is 3120441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1440213 - 2¹ = 1440211 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 1440192 and 1440201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240033 + ... + 240038.

It is an arithmetic number, because the mean of its divisors is an integer number (480072).

2^1440213 is an apocalyptic number.

It is an amenable number.

1440213 is a deficient number, since it is larger than the sum of its proper divisors (480075).

1440213 is an equidigital number, since it uses as much as digits as its factorization.

1440213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480074.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1440213 is about 1200.0887467183. The cubic root of 1440213 is about 112.9298909877.

Adding to 1440213 its reverse (3120441), we get a palindrome (4560654).

It can be divided in two parts, 1440 and 213, that added together give a triangular number (1653 = T₅₇).

The spelling of 1440213 in words is "one million, four hundred forty thousand, two hundred thirteen".