40043118 has 16 divisors (see below), whose sum is σ = 80156160. Its totient is φ = 13336056.

The previous prime is 40043117. The next prime is 40043119. The reversal of 40043118 is 81134004.

It is an interprime number because it is at equal distance from previous prime (40043117) and next prime (40043119).

It is a junction number, because it is equal to n+sod(n) for n = 40043094 and 40043103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40043111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7273 + ... + 11531.

It is an arithmetic number, because the mean of its divisors is an integer number (5009760).

Almost surely, 2^40043118 is an apocalyptic number.

40043118 is an abundant number, since it is smaller than the sum of its proper divisors (40113042).

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

40043118 is a wasteful number, since it uses less digits than its factorization.

40043118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5831.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 40043118 is about 6327.9631794125. The cubic root of 40043118 is about 342.1180297787.

The spelling of 40043118 in words is "forty million, forty-three thousand, one hundred eighteen".