40136138 has 8 divisors (see below), whose sum is σ = 68804832. Its totient is φ = 17201196.

The previous prime is 40136119. The next prime is 40136141. The reversal of 40136138 is 83163104.

40136138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40136138² = 3221819147110088, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1433420 + ... + 1433447.

It is an arithmetic number, because the mean of its divisors is an integer number (8600604).

Almost surely, 2^40136138 is an apocalyptic number.

40136138 is a deficient number, since it is larger than the sum of its proper divisors (28668694).

40136138 is a wasteful number, since it uses less digits than its factorization.

40136138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866876.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 40136138 is about 6335.3088322512. The cubic root of 40136138 is about 342.3827378424.

The spelling of 40136138 in words is "forty million, one hundred thirty-six thousand, one hundred thirty-eight".