40630129 has 2 divisors, whose sum is σ = 40630130. Its totient is φ = 40630128.

The previous prime is 40630111. The next prime is 40630133. The reversal of 40630129 is 92103604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38725729 + 1904400 = 6223^2 + 1380^2 .

It is a cyclic number.

It is not a de Polignac number, because 40630129 - 2⁵ = 40630097 is a prime.

It is not a weakly prime, because it can be changed into another prime (40630159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20315064 + 20315065.

It is an arithmetic number, because the mean of its divisors is an integer number (20315065).

Almost surely, 2^40630129 is an apocalyptic number.

It is an amenable number.

40630129 is a deficient number, since it is larger than the sum of its proper divisors (1).

40630129 is an equidigital number, since it uses as much as digits as its factorization.

40630129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 40630129 is about 6374.1767311552. The cubic root of 40630129 is about 343.7816832946.

The spelling of 40630129 in words is "forty million, six hundred thirty thousand, one hundred twenty-nine".