1140481 has 4 divisors (see below), whose sum is σ = 1146964. Its totient is φ = 1134000.

The previous prime is 1140463. The next prime is 1140487. The reversal of 1140481 is 1840411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1840411 = 743 ⋅2477.

It can be written as a sum of positive squares in 2 ways, for example, as 266256 + 874225 = 516^2 + 935^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140481 - 2⁵ = 1140449 is a prime.

It is a super-2 number, since 2×1140481² = 2601393822722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140487) 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, 2970 + ... + 3331.

It is an arithmetic number, because the mean of its divisors is an integer number (286741).

2^1140481 is an apocalyptic number.

It is an amenable number.

1140481 is a deficient number, since it is larger than the sum of its proper divisors (6483).

1140481 is an equidigital number, since it uses as much as digits as its factorization.

1140481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6482.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 1140481 is about 1067.9330503360. The cubic root of 1140481 is about 104.4790828306.

Adding to 1140481 its reverse (1840411), we get a palindrome (2980892).

The spelling of 1140481 in words is "one million, one hundred forty thousand, four hundred eighty-one".