40242306 has 32 divisors (see below), whose sum is σ = 87534720. Its totient is φ = 12259584.

The previous prime is 40242289. The next prime is 40242311. The reversal of 40242306 is 60324204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5530 + ... + 10538.

It is an arithmetic number, because the mean of its divisors is an integer number (2735460).

Almost surely, 2^40242306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40242306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43767360).

40242306 is an abundant number, since it is smaller than the sum of its proper divisors (47292414).

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

40242306 is a wasteful number, since it uses less digits than its factorization.

40242306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5130.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 40242306 is about 6343.6823690976. The cubic root of 40242306 is about 342.6843620003.

The spelling of 40242306 in words is "forty million, two hundred forty-two thousand, three hundred six".