40632121 has 2 divisors, whose sum is σ = 40632122. Its totient is φ = 40632120.

The previous prime is 40632049. The next prime is 40632167. The reversal of 40632121 is 12123604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33767721 + 6864400 = 5811^2 + 2620^2 .

It is a cyclic number.

It is not a de Polignac number, because 40632121 - 2⁷ = 40631993 is a prime.

It is not a weakly prime, because it can be changed into another prime (40632521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20316060 + 20316061.

It is an arithmetic number, because the mean of its divisors is an integer number (20316061).

Almost surely, 2^40632121 is an apocalyptic number.

It is an amenable number.

40632121 is a deficient number, since it is larger than the sum of its proper divisors (1).

40632121 is an equidigital number, since it uses as much as digits as its factorization.

40632121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 40632121 is about 6374.3329847130. The cubic root of 40632121 is about 343.7873014728.

Adding to 40632121 its reverse (12123604), we get a palindrome (52755725).

The spelling of 40632121 in words is "forty million, six hundred thirty-two thousand, one hundred twenty-one".