1144381 has 4 divisors (see below), whose sum is σ = 1307872. Its totient is φ = 980892.

The previous prime is 1144379. The next prime is 1144393. The reversal of 1144381 is 1834411.

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: 1834411 = 23 ⋅79757.

It is a cyclic number.

It is not a de Polignac number, because 1144381 - 2¹ = 1144379 is a prime.

It is a super-2 number, since 2×1144381² = 2619215746322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144301) 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, 81735 + ... + 81748.

It is an arithmetic number, because the mean of its divisors is an integer number (326968).

2^1144381 is an apocalyptic number.

It is an amenable number.

1144381 is a deficient number, since it is larger than the sum of its proper divisors (163491).

1144381 is an equidigital number, since it uses as much as digits as its factorization.

1144381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163490.

The product of its digits is 384, while the sum is 22.

The square root of 1144381 is about 1069.7574491444. The cubic root of 1144381 is about 104.5980399030.

Adding to 1144381 its reverse (1834411), we get a palindrome (2978792).

The spelling of 1144381 in words is "one million, one hundred forty-four thousand, three hundred eighty-one".