40135543 has 16 divisors (see below), whose sum is σ = 48459520. Its totient is φ = 32472576.

The previous prime is 40135523. The next prime is 40135547. The reversal of 40135543 is 34553104.

It is a cyclic number.

It is not a de Polignac number, because 40135543 - 2²¹ = 38038391 is a prime.

It is a super-2 number, since 2×40135543² = 3221723623809698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40135547) 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, 69271 + ... + 69847.

It is an arithmetic number, because the mean of its divisors is an integer number (3028720).

Almost surely, 2^40135543 is an apocalyptic number.

40135543 is a deficient number, since it is larger than the sum of its proper divisors (8323977).

40135543 is a wasteful number, since it uses less digits than its factorization.

40135543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 40135543 is about 6335.2618730405. The cubic root of 40135543 is about 342.3810459445.

Adding to 40135543 its reverse (34553104), we get a palindrome (74688647).

The spelling of 40135543 in words is "forty million, one hundred thirty-five thousand, five hundred forty-three".