406142041 has 2 divisors, whose sum is σ = 406142042. Its totient is φ = 406142040.

The previous prime is 406142039. The next prime is 406142057. The reversal of 406142041 is 140241604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 364810000 + 41332041 = 19100^2 + 6429^2 .

It is a cyclic number.

It is not a de Polignac number, because 406142041 - 2¹ = 406142039 is a prime.

Together with 406142039, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (406142641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203071020 + 203071021.

It is an arithmetic number, because the mean of its divisors is an integer number (203071021).

Almost surely, 2^406142041 is an apocalyptic number.

It is an amenable number.

406142041 is a deficient number, since it is larger than the sum of its proper divisors (1).

406142041 is an equidigital number, since it uses as much as digits as its factorization.

406142041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 406142041 is about 20152.9660596151. The cubic root of 406142041 is about 740.5584055227.

Adding to 406142041 its reverse (140241604), we get a palindrome (546383645).

The spelling of 406142041 in words is "four hundred six million, one hundred forty-two thousand, forty-one".