42404113 has 2 divisors, whose sum is σ = 42404114. Its totient is φ = 42404112.

The previous prime is 42404093. The next prime is 42404147. The reversal of 42404113 is 31140424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41254929 + 1149184 = 6423^2 + 1072^2 .

It is a cyclic number.

It is not a de Polignac number, because 42404113 - 2¹⁷ = 42273041 is a prime.

It is not a weakly prime, because it can be changed into another prime (42404513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21202056 + 21202057.

It is an arithmetic number, because the mean of its divisors is an integer number (21202057).

Almost surely, 2^42404113 is an apocalyptic number.

It is an amenable number.

42404113 is a deficient number, since it is larger than the sum of its proper divisors (1).

42404113 is an equidigital number, since it uses as much as digits as its factorization.

42404113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 42404113 is about 6511.8440552581. The cubic root of 42404113 is about 348.7139551567.

Adding to 42404113 its reverse (31140424), we get a palindrome (73544537).

The spelling of 42404113 in words is "forty-two million, four hundred four thousand, one hundred thirteen".