40136145 has 64 divisors (see below), whose sum is σ = 77760000. Its totient is φ = 17649408.

The previous prime is 40136141. The next prime is 40136153. The reversal of 40136145 is 54163104.

40136145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40136145 - 2² = 40136141 is a prime.

It is a super-2 number, since 2×40136145² = 3221820270922050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40136141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 149071 + ... + 149339.

It is an arithmetic number, because the mean of its divisors is an integer number (1215000).

Almost surely, 2^40136145 is an apocalyptic number.

It is an amenable number.

40136145 is a deficient number, since it is larger than the sum of its proper divisors (37623855).

40136145 is a wasteful number, since it uses less digits than its factorization.

40136145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 40136145 is about 6335.3093847104. The cubic root of 40136145 is about 342.3827577469.

Adding to 40136145 its reverse (54163104), we get a palindrome (94299249).

The spelling of 40136145 in words is "forty million, one hundred thirty-six thousand, one hundred forty-five".