40666043 has 8 divisors (see below), whose sum is σ = 44731056. Its totient is φ = 36967920.

The previous prime is 40666007. The next prime is 40666051. The reversal of 40666043 is 34066604.

It is not a de Polignac number, because 40666043 - 2¹² = 40661947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40665997 and 40666015.

It is not an unprimeable number, because it can be changed into a prime (40666063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13946 + ... + 16607.

It is an arithmetic number, because the mean of its divisors is an integer number (5591382).

Almost surely, 2^40666043 is an apocalyptic number.

40666043 is a deficient number, since it is larger than the sum of its proper divisors (4065013).

40666043 is an equidigital number, since it uses as much as digits as its factorization.

40666043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30586 (or 30564 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 40666043 is about 6376.9932570138. The cubic root of 40666043 is about 343.8829459096.

The spelling of 40666043 in words is "forty million, six hundred sixty-six thousand, forty-three".