42181127 has 2 divisors, whose sum is σ = 42181128. Its totient is φ = 42181126.

The previous prime is 42181093. The next prime is 42181133. The reversal of 42181127 is 72118124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42181127 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42181096 and 42181105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42181157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21090563 + 21090564.

It is an arithmetic number, because the mean of its divisors is an integer number (21090564).

Almost surely, 2^42181127 is an apocalyptic number.

42181127 is a deficient number, since it is larger than the sum of its proper divisors (1).

42181127 is an equidigital number, since it uses as much as digits as its factorization.

42181127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 896, while the sum is 26.

The square root of 42181127 is about 6494.6999160854. The cubic root of 42181127 is about 348.1016322482.

The spelling of 42181127 in words is "forty-two million, one hundred eighty-one thousand, one hundred twenty-seven".