1091002 has 16 divisors (see below), whose sum is σ = 1806624. Its totient is φ = 490000.

The previous prime is 1090997. The next prime is 1091003. The reversal of 1091002 is 2001901.

It is not an unprimeable number, because it can be changed into a prime (1091003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1977 + ... + 2467.

It is an arithmetic number, because the mean of its divisors is an integer number (112914).

2^1091002 is an apocalyptic number.

1091002 is a deficient number, since it is larger than the sum of its proper divisors (715622).

1091002 is a wasteful number, since it uses less digits than its factorization.

1091002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1091002 is about 1044.5104116283. The cubic root of 1091002 is about 102.9457721902.

Adding to 1091002 its reverse (2001901), we get a palindrome (3092903).

It can be divided in two parts, 109 and 1002, that added together give a palindrome (1111).

The spelling of 1091002 in words is "one million, ninety-one thousand, two".