42538127 has 2 divisors, whose sum is σ = 42538128. Its totient is φ = 42538126.

The previous prime is 42538121. The next prime is 42538151. The reversal of 42538127 is 72183524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42538127 - 2¹² = 42534031 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42538093 and 42538102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42538121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21269063 + 21269064.

It is an arithmetic number, because the mean of its divisors is an integer number (21269064).

Almost surely, 2^42538127 is an apocalyptic number.

42538127 is a deficient number, since it is larger than the sum of its proper divisors (1).

42538127 is an equidigital number, since it uses as much as digits as its factorization.

42538127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 32.

The square root of 42538127 is about 6522.1259570787. The cubic root of 42538127 is about 349.0809274757.

The spelling of 42538127 in words is "forty-two million, five hundred thirty-eight thousand, one hundred twenty-seven".