40135605 has 16 divisors (see below), whose sum is σ = 64302720. Its totient is φ = 21377088.

The previous prime is 40135577. The next prime is 40135609. The reversal of 40135605 is 50653104.

It is not a de Polignac number, because 40135605 - 2⁵ = 40135573 is a prime.

It is a super-2 number, since 2×40135605² = 3221733577432050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40135609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14784 + ... + 17286.

It is an arithmetic number, because the mean of its divisors is an integer number (4018920).

Almost surely, 2^40135605 is an apocalyptic number.

It is an amenable number.

40135605 is a deficient number, since it is larger than the sum of its proper divisors (24167115).

40135605 is a wasteful number, since it uses less digits than its factorization.

40135605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3580.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 40135605 is about 6335.2667662854. The cubic root of 40135605 is about 342.3812222439.

Adding to 40135605 its reverse (50653104), we get a palindrome (90788709).

The spelling of 40135605 in words is "forty million, one hundred thirty-five thousand, six hundred five".