1438243 has 8 divisors (see below), whose sum is σ = 1540800. Its totient is φ = 1338408.

The previous prime is 1438237. The next prime is 1438253. The reversal of 1438243 is 3428341.

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 1438243 - 2⁵ = 1438211 is a prime.

It is a Duffinian number.

1438243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1438223) 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 7 ways as a sum of consecutive naturals, for example, 480 + ... + 1762.

It is an arithmetic number, because the mean of its divisors is an integer number (192600).

2^1438243 is an apocalyptic number.

1438243 is a deficient number, since it is larger than the sum of its proper divisors (102557).

1438243 is a wasteful number, since it uses less digits than its factorization.

1438243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361.

The product of its digits is 2304, while the sum is 25.

The square root of 1438243 is about 1199.2676932195. The cubic root of 1438243 is about 112.8783769874.

It can be divided in two parts, 1438 and 243, that added together give a square (1681 = 41²).

The spelling of 1438243 in words is "one million, four hundred thirty-eight thousand, two hundred forty-three".