405540230129 has 2 divisors, whose sum is σ = 405540230130. Its totient is φ = 405540230128.

The previous prime is 405540230119. The next prime is 405540230153. The reversal of 405540230129 is 921032045504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 397343643904 + 8196586225 = 630352^2 + 90535^2 .

It is a cyclic number.

It is not a de Polignac number, because 405540230129 - 2⁴ = 405540230113 is a prime.

It is not a weakly prime, because it can be changed into another prime (405540230119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202770115064 + 202770115065.

It is an arithmetic number, because the mean of its divisors is an integer number (202770115065).

Almost surely, 2^405540230129 is an apocalyptic number.

It is an amenable number.

405540230129 is a deficient number, since it is larger than the sum of its proper divisors (1).

405540230129 is an equidigital number, since it uses as much as digits as its factorization.

405540230129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 405540230129 in words is "four hundred five billion, five hundred forty million, two hundred thirty thousand, one hundred twenty-nine".