40136 has 16 divisors (see below), whose sum is σ = 78300. Its totient is φ = 19264.

The previous prime is 40129. The next prime is 40151. The reversal of 40136 is 63104.

It can be written as a sum of positive squares in 2 ways, for example, as 37636 + 2500 = 194^2 + 50^2 .

It is a super-2 number, since 2×40136² = 3221796992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40136.

It is an unprimeable number.

40136 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146 + ... + 318.

2⁴⁰¹³⁶ is an apocalyptic number.

40136 is the 116-th octagonal number.

It is an amenable number.

40136 is a deficient number, since it is larger than the sum of its proper divisors (38164).

40136 is a wasteful number, since it uses less digits than its factorization.

40136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 40136 is about 200.3397114903. The cubic root of 40136 is about 34.2382345437.

The spelling of 40136 in words is "forty thousand, one hundred thirty-six".