1072081 has 4 divisors (see below), whose sum is σ = 1078452. Its totient is φ = 1065712.

The previous prime is 1072039. The next prime is 1072103. The reversal of 1072081 is 1802701.

1072081 = T₁₃ + T₁₄ + ... + T₁₈₅.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 731025 + 341056 = 855^2 + 584^2 .

It is a cyclic number.

It is not a de Polignac number, because 1072081 - 2⁹ = 1071569 is a prime.

It is a super-2 number, since 2×1072081² = 2298715341122, which contains 22 as substring.

It is a Duffinian number.

1072081 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1072381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2926 + ... + 3271.

It is an arithmetic number, because the mean of its divisors is an integer number (269613).

2^1072081 is an apocalyptic number.

It is an amenable number.

1072081 is a deficient number, since it is larger than the sum of its proper divisors (6371).

1072081 is an equidigital number, since it uses as much as digits as its factorization.

1072081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6370.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 1072081 is about 1035.4134439923. The cubic root of 1072081 is about 102.3471765824.

Adding to 1072081 its reverse (1802701), we get a palindrome (2874782).

It can be divided in two parts, 10720 and 81, that added together give a palindrome (10801).

The spelling of 1072081 in words is "one million, seventy-two thousand, eighty-one".