40092138 has 32 divisors (see below), whose sum is σ = 90357120. Its totient is φ = 13174560.

The previous prime is 40092119. The next prime is 40092139. The reversal of 40092138 is 83129004.

40092138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40092138² = 3214759058822088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40092139) 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 15 ways as a sum of consecutive naturals, for example, 1395 + ... + 9062.

It is an arithmetic number, because the mean of its divisors is an integer number (2823660).

Almost surely, 2^40092138 is an apocalyptic number.

40092138 is an abundant number, since it is smaller than the sum of its proper divisors (50264982).

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

40092138 is a wasteful number, since it uses less digits than its factorization.

40092138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10539 (or 10533 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 40092138 is about 6331.8352789693. The cubic root of 40092138 is about 342.2575775786.

The spelling of 40092138 in words is "forty million, ninety-two thousand, one hundred thirty-eight".