1000071 has 6 divisors (see below), whose sum is σ = 1444560. Its totient is φ = 666708.

The previous prime is 1000039. The next prime is 1000081. The reversal of 1000071 is 1700001.

1000071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1000071 - 2⁵ = 1000039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 111119 = 1000071 / (1 + 0 + 0 + 0 + 0 + 7 + 1).

1000071 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55551 + ... + 55568.

It is an arithmetic number, because the mean of its divisors is an integer number (240760).

2^1000071 is an apocalyptic number.

1000071 is a deficient number, since it is larger than the sum of its proper divisors (444489).

1000071 is a wasteful number, since it uses less digits than its factorization.

1000071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111125 (or 111122 counting only the distinct ones).

The product of its (nonzero) digits is 7, while the sum is 9.

The square root of 1000071 is about 1000.0354993699. The cubic root of 1000071 is about 100.0023666107.

Adding to 1000071 its reverse (1700001), we get a palindrome (2700072).

The spelling of 1000071 in words is "one million, seventy-one", and thus it is an aban number and an uban number.