40852121 has 2 divisors, whose sum is σ = 40852122. Its totient is φ = 40852120.

The previous prime is 40852103. The next prime is 40852129. The reversal of 40852121 is 12125804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39438400 + 1413721 = 6280^2 + 1189^2 .

It is a cyclic number.

It is not a de Polignac number, because 40852121 - 2⁶ = 40852057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40852129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20426060 + 20426061.

It is an arithmetic number, because the mean of its divisors is an integer number (20426061).

Almost surely, 2^40852121 is an apocalyptic number.

It is an amenable number.

40852121 is a deficient number, since it is larger than the sum of its proper divisors (1).

40852121 is an equidigital number, since it uses as much as digits as its factorization.

40852121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 40852121 is about 6391.5663964321. The cubic root of 40852121 is about 344.4066563895.

Adding to 40852121 its reverse (12125804), we get a palindrome (52977925).

The spelling of 40852121 in words is "forty million, eight hundred fifty-two thousand, one hundred twenty-one".