1085040 has 120 divisors (see below), whose sum is σ = 4004208. Its totient is φ = 261120.

The previous prime is 1085023. The next prime is 1085047. The reversal of 1085040 is 405801.

Added to its reverse (405801) it gives a square (1490841 = 1221²).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085047) 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, 7852 + ... + 7988.

2^1085040 is an apocalyptic number.

1085040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1085040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2002104).

1085040 is an abundant number, since it is smaller than the sum of its proper divisors (2919168).

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

1085040 is a wasteful number, since it uses less digits than its factorization.

1085040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1085040 is about 1041.6525332375. The cubic root of 1085040 is about 102.7579069341.

Adding to 1085040 its reverse (405801), we get a square (1490841 = 1221²).

The spelling of 1085040 in words is "one million, eighty-five thousand, forty".