405124043 has 2 divisors, whose sum is σ = 405124044. Its totient is φ = 405124042.

The previous prime is 405124039. The next prime is 405124081. The reversal of 405124043 is 340421504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405124043 - 2² = 405124039 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (405124843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202562021 + 202562022.

It is an arithmetic number, because the mean of its divisors is an integer number (202562022).

Almost surely, 2^405124043 is an apocalyptic number.

405124043 is a deficient number, since it is larger than the sum of its proper divisors (1).

405124043 is an equidigital number, since it uses as much as digits as its factorization.

405124043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 405124043 is about 20127.6934346686. The cubic root of 405124043 is about 739.9391494887.

Adding to 405124043 its reverse (340421504), we get a palindrome (745545547).

The spelling of 405124043 in words is "four hundred five million, one hundred twenty-four thousand, forty-three".