1443121 has 4 divisors (see below), whose sum is σ = 1460592. Its totient is φ = 1425652.

The previous prime is 1443119. The next prime is 1443131. The reversal of 1443121 is 1213441.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1213441 = 179 ⋅6779.

It is a cyclic number.

It is not a de Polignac number, because 1443121 - 2¹ = 1443119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1443095 and 1443104.

It is not an unprimeable number, because it can be changed into a prime (1443131) 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, 8611 + ... + 8776.

It is an arithmetic number, because the mean of its divisors is an integer number (365148).

2^1443121 is an apocalyptic number.

It is an amenable number.

1443121 is a deficient number, since it is larger than the sum of its proper divisors (17471).

1443121 is an equidigital number, since it uses as much as digits as its factorization.

1443121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17470.

The product of its digits is 96, while the sum is 16.

The square root of 1443121 is about 1201.2997128111. The cubic root of 1443121 is about 113.0058471927.

Adding to 1443121 its reverse (1213441), we get a palindrome (2656562).

The spelling of 1443121 in words is "one million, four hundred forty-three thousand, one hundred twenty-one".