40120236 has 72 divisors (see below), whose sum is σ = 111143760. Its totient is φ = 12127104.

The previous prime is 40120219. The next prime is 40120259. The reversal of 40120236 is 63202104.

It is a happy number.

40120236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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 23 ways as a sum of consecutive naturals, for example, 26886 + ... + 28338.

Almost surely, 2^40120236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40120236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55571880).

40120236 is an abundant number, since it is smaller than the sum of its proper divisors (71023524).

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

40120236 is a wasteful number, since it uses less digits than its factorization.

40120236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535 (or 1530 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40120236 is about 6334.0536783327. The cubic root of 40120236 is about 342.3375143457.

The spelling of 40120236 in words is "forty million, one hundred twenty thousand, two hundred thirty-six".