1085406040 has 32 divisors (see below), whose sum is σ = 2443977360. Its totient is φ = 433840000.

The previous prime is 1085406037. The next prime is 1085406061. The reversal of 1085406040 is 406045801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48690 + ... + 67390.

Almost surely, 2^1085406040 is an apocalyptic number.

1085406040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1085406040 is an abundant number, since it is smaller than the sum of its proper divisors (1358571320).

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

1085406040 is a wasteful number, since it uses less digits than its factorization.

1085406040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20163 (or 20159 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1085406040 is about 32945.5010585664. The cubic root of 1085406040 is about 1027.6946081703.

The spelling of 1085406040 in words is "one billion, eighty-five million, four hundred six thousand, forty".