1001147 has 16 divisors (see below), whose sum is σ = 1244160. Its totient is φ = 786048.

The previous prime is 1001123. The next prime is 1001153. The reversal of 1001147 is 7411001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1001147 - 2¹⁸ = 739003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5504 + ... + 5682.

It is an arithmetic number, because the mean of its divisors is an integer number (77760).

2^1001147 is an apocalyptic number.

1001147 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1001147 is a deficient number, since it is larger than the sum of its proper divisors (243013).

1001147 is a wasteful number, since it uses less digits than its factorization.

1001147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 1001147 is about 1000.5733356431. The cubic root of 1001147 is about 100.0382187248.

Adding to 1001147 its reverse (7411001), we get a palindrome (8412148).

The spelling of 1001147 in words is "one million, one thousand, one hundred forty-seven".