1095921 has 12 divisors (see below), whose sum is σ = 1592448. Its totient is φ = 726264.

The previous prime is 1095907. The next prime is 1095931. The reversal of 1095921 is 1295901.

It is a happy number.

It is not a de Polignac number, because 1095921 - 2⁷ = 1095793 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1095931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2136 + ... + 2598.

It is an arithmetic number, because the mean of its divisors is an integer number (132704).

2^1095921 is an apocalyptic number.

It is an amenable number.

1095921 is a deficient number, since it is larger than the sum of its proper divisors (496527).

1095921 is a wasteful number, since it uses less digits than its factorization.

1095921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 1095921 is about 1046.8624551487. The cubic root of 1095921 is about 103.1002574249.

It can be divided in two parts, 1095 and 921, that added together give a triangular number (2016 = T₆₃).

The spelling of 1095921 in words is "one million, ninety-five thousand, nine hundred twenty-one".