40108140 has 36 divisors (see below), whose sum is σ = 121661904. Its totient is φ = 10695456.

The previous prime is 40108129. The next prime is 40108153. The reversal of 40108140 is 4180104.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111232 + ... + 111591.

Almost surely, 2^40108140 is an apocalyptic number.

It is an amenable number.

40108140 is an abundant number, since it is smaller than the sum of its proper divisors (81553764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40108140 is a wasteful number, since it uses less digits than its factorization.

40108140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222838 (or 222833 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 40108140 is about 6333.0987675861. The cubic root of 40108140 is about 342.3031066818.

Adding to 40108140 its reverse (4180104), we get a palindrome (44288244).

Subtracting from 40108140 its reverse (4180104), we obtain a square (35928036 = 5994²).

The spelling of 40108140 in words is "forty million, one hundred eight thousand, one hundred forty".