1141645 has 8 divisors (see below), whose sum is σ = 1403640.
Its totient is φ = 890880.
The previous prime is 1141633. The next prime is 1141649. The reversal of 1141645 is 5461411.
It can be written as a sum of positive squares in 4 ways, for example, as 20164 + 1121481 = 142^2 + 1059^2
It is a sphenic number, since it is the product of 3 distinct primes.
It is a de Polignac number, because none of the positive numbers 2k-1141645 is a prime.
It is a super-3 number, since 3×11416453 = 4463900355170733375, which contains 333 as substring.
1141645 is a lucky number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1141649) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2580 + ... + 2989.
It is an arithmetic number, because the mean of its divisors is an integer number (175455).
21141645 is an apocalyptic number.
It is an amenable number.
1141645 is a deficient number, since it is larger than the sum of its proper divisors (261995).
1141645 is an equidigital number, since it uses as much as digits as its factorization.
1141645 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5615.
The product of its digits is 480, while the sum is 22.
The square root of 1141645 is about 1068.4778893360.
The cubic root of 1141645 is about 104.5146152952.
The spelling of 1141645 in words is "one million, one hundred forty-one thousand, six hundred forty-five".