40042266 has 32 divisors (see below), whose sum is σ = 90187776. Its totient is φ = 11742000.

The previous prime is 40042231. The next prime is 40042273. The reversal of 40042266 is 66224004.

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, 7740 + ... + 11831.

It is an arithmetic number, because the mean of its divisors is an integer number (2818368).

Almost surely, 2^40042266 is an apocalyptic number.

40042266 is an abundant number, since it is smaller than the sum of its proper divisors (50145510).

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

40042266 is a wasteful number, since it uses less digits than its factorization.

40042266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19618.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 40042266 is about 6327.8958588144. The cubic root of 40042266 is about 342.1156033391.

The spelling of 40042266 in words is "forty million, forty-two thousand, two hundred sixty-six".