1147005 has 24 divisors (see below), whose sum is σ = 2021760. Its totient is φ = 601440.

The previous prime is 1146989. The next prime is 1147009. The reversal of 1147005 is 5007411.

It is not a de Polignac number, because 1147005 - 2⁴ = 1146989 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3016 + ... + 3374.

It is an arithmetic number, because the mean of its divisors is an integer number (84240).

2^1147005 is an apocalyptic number.

1147005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1147005 is a deficient number, since it is larger than the sum of its proper divisors (874755).

1147005 is a wasteful number, since it uses less digits than its factorization.

1147005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 1147005 is about 1070.9831931454. The cubic root of 1147005 is about 104.6779246459.

The spelling of 1147005 in words is "one million, one hundred forty-seven thousand, five".