1012091 has 4 divisors (see below), whose sum is σ = 1035672. Its totient is φ = 988512.

The previous prime is 1012087. The next prime is 1012093. The reversal of 1012091 is 1902101.

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

It is a cyclic number.

It is not a de Polignac number, because 1012091 - 2² = 1012087 is a prime.

It is a super-3 number, since 3×1012091³ = 3110140033361608713, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012093) 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, 11726 + ... + 11811.

It is an arithmetic number, because the mean of its divisors is an integer number (258918).

2^1012091 is an apocalyptic number.

1012091 is a deficient number, since it is larger than the sum of its proper divisors (23581).

1012091 is an equidigital number, since it uses as much as digits as its factorization.

1012091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23580.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1012091 is about 1006.0273356127. The cubic root of 1012091 is about 100.4014197987.

Adding to 1012091 its reverse (1902101), we get a palindrome (2914192).

The spelling of 1012091 in words is "one million, twelve thousand, ninety-one".