1012081 has 4 divisors (see below), whose sum is σ = 1156672. Its totient is φ = 867492.

The previous prime is 1012079. The next prime is 1012087. The reversal of 1012081 is 1802101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1802101 = 7 ⋅257443.

It is a cyclic number.

It is not a de Polignac number, because 1012081 - 2¹ = 1012079 is a prime.

It is a super-2 number, since 2×1012081² = 2048615901122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012087) 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, 72285 + ... + 72298.

It is an arithmetic number, because the mean of its divisors is an integer number (289168).

2^1012081 is an apocalyptic number.

It is an amenable number.

1012081 is a deficient number, since it is larger than the sum of its proper divisors (144591).

1012081 is an equidigital number, since it uses as much as digits as its factorization.

1012081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144590.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1012081 is about 1006.0223655566. The cubic root of 1012081 is about 100.4010891243.

Adding to 1012081 its reverse (1802101), we get a palindrome (2814182).

It can be divided in two parts, 10120 and 81, that added together give a palindrome (10201).

The spelling of 1012081 in words is "one million, twelve thousand, eighty-one".