40052066 has 4 divisors (see below), whose sum is σ = 60078102. Its totient is φ = 20026032.

The previous prime is 40052063. The next prime is 40052069. The reversal of 40052066 is 66025004.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (40052063) and next prime (40052069).

It can be written as a sum of positive squares in only one way, i.e., 25452025 + 14600041 = 5045^2 + 3821^2 .

It is not an unprimeable number, because it can be changed into a prime (40052063) 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 as a sum of consecutive naturals, namely, 10013015 + ... + 10013018.

Almost surely, 2^40052066 is an apocalyptic number.

40052066 is a deficient number, since it is larger than the sum of its proper divisors (20026036).

40052066 is a wasteful number, since it uses less digits than its factorization.

40052066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20026035.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 40052066 is about 6328.6701604682. The cubic root of 40052066 is about 342.1435110124.

The spelling of 40052066 in words is "forty million, fifty-two thousand, sixty-six", and thus it is an eban number.