40136505 has 16 divisors (see below), whose sum is σ = 64296960. Its totient is φ = 21379968.

The previous prime is 40136497. The next prime is 40136533. The reversal of 40136505 is 50563104.

It is not a de Polignac number, because 40136505 - 2³ = 40136497 is a prime.

It is a super-2 number, since 2×40136505² = 3221878067230050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23304 + ... + 24966.

It is an arithmetic number, because the mean of its divisors is an integer number (4018560).

Almost surely, 2^40136505 is an apocalyptic number.

It is an amenable number.

40136505 is a deficient number, since it is larger than the sum of its proper divisors (24160455).

40136505 is a wasteful number, since it uses less digits than its factorization.

40136505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3280.

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

The square root of 40136505 is about 6335.3377968345. The cubic root of 40136505 is about 342.3837814080.

Adding to 40136505 its reverse (50563104), we get a palindrome (90699609).

The spelling of 40136505 in words is "forty million, one hundred thirty-six thousand, five hundred five".