1095021 has 18 divisors (see below), whose sum is σ = 1684202. Its totient is φ = 685440.

The previous prime is 1094999. The next prime is 1095023. The reversal of 1095021 is 1205901.

It can be written as a sum of positive squares in 3 ways, for example, as 114921 + 980100 = 339^2 + 990^2 .

It is not a de Polignac number, because 1095021 - 2⁶ = 1094957 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1094985 and 1095003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1095023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2391 + ... + 2811.

2^1095021 is an apocalyptic number.

It is an amenable number.

1095021 is a deficient number, since it is larger than the sum of its proper divisors (589181).

1095021 is a wasteful number, since it uses less digits than its factorization.

1095021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1095021 is about 1046.4325109628. The cubic root of 1095021 is about 103.0720267879.

The spelling of 1095021 in words is "one million, ninety-five thousand, twenty-one".