1140845 has 8 divisors (see below), whose sum is σ = 1374840. Its totient is φ = 908800.

The previous prime is 1140803. The next prime is 1140847. The reversal of 1140845 is 5480411.

It can be written as a sum of positive squares in 4 ways, for example, as 244036 + 896809 = 494^2 + 947^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1140845 - 2¹² = 1136749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1140845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140847) 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, 1721 + ... + 2289.

It is an arithmetic number, because the mean of its divisors is an integer number (171855).

2^1140845 is an apocalyptic number.

It is an amenable number.

1140845 is a deficient number, since it is larger than the sum of its proper divisors (233995).

1140845 is an equidigital number, since it uses as much as digits as its factorization.

1140845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 1140845 is about 1068.1034594083. The cubic root of 1140845 is about 104.4901969544.

The spelling of 1140845 in words is "one million, one hundred forty thousand, eight hundred forty-five".