1101090 has 48 divisors (see below), whose sum is σ = 2829312. Its totient is φ = 274176.

The previous prime is 1101071. The next prime is 1101091. The reversal of 1101090 is 901011.

It is not an unprimeable number, because it can be changed into a prime (1101091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8607 + ... + 8733.

It is an arithmetic number, because the mean of its divisors is an integer number (58944).

2^1101090 is an apocalyptic number.

1101090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1101090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1414656).

1101090 is an abundant number, since it is smaller than the sum of its proper divisors (1728222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1101090 is a wasteful number, since it uses less digits than its factorization.

1101090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 1101090 is about 1049.3283566167. The cubic root of 1101090 is about 103.2620968147.

The spelling of 1101090 in words is "one million, one hundred one thousand, ninety".