40140585 has 24 divisors (see below), whose sum is σ = 71061120. Its totient is φ = 20951712.

The previous prime is 40140539. The next prime is 40140601. The reversal of 40140585 is 58504104.

40140585 is a `hidden beast` number, since 40 + 1 + 40 + 585 = 666.

It is not a de Polignac number, because 40140585 - 2⁹ = 40140073 is a prime.

It is a super-2 number, since 2×40140585² = 3222533128284450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7375 + ... + 11604.

It is an arithmetic number, because the mean of its divisors is an integer number (2960880).

Almost surely, 2^40140585 is an apocalyptic number.

40140585 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40140585 is a deficient number, since it is larger than the sum of its proper divisors (30920535).

40140585 is a wasteful number, since it uses less digits than its factorization.

40140585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19037 (or 19034 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 40140585 is about 6335.6597920027. The cubic root of 40140585 is about 342.3953824720.

Adding to 40140585 its reverse (58504104), we get a palindrome (98644689).

It can be divided in two parts, 40 and 140585, that added together give a square (140625 = 375²).

The spelling of 40140585 in words is "forty million, one hundred forty thousand, five hundred eighty-five".