1140445 has 8 divisors (see below), whose sum is σ = 1449144. Its totient is φ = 858624.

The previous prime is 1140439. The next prime is 1140449. The reversal of 1140445 is 5440411.

It can be written as a sum of positive squares in 4 ways, for example, as 178084 + 962361 = 422^2 + 981^2 .

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 1140445 - 2⁵ = 1140413 is a prime.

It is a super-2 number, since 2×1140445² = 2601229596050, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a zygodrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6624 + ... + 6793.

It is an arithmetic number, because the mean of its divisors is an integer number (181143).

2^1140445 is an apocalyptic number.

It is an amenable number.

1140445 is a deficient number, since it is larger than the sum of its proper divisors (308699).

1140445 is a wasteful number, since it uses less digits than its factorization.

1140445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13439.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1140445 is about 1067.9161952138. The cubic root of 1140445 is about 104.4779835031.

Adding to 1140445 its reverse (5440411), we get a palindrome (6580856).

It can be divided in two parts, 11404 and 45, that added together give a square (11449 = 107²).

The spelling of 1140445 in words is "one million, one hundred forty thousand, four hundred forty-five".