42005127 has 4 divisors (see below), whose sum is σ = 56006840. Its totient is φ = 28003416.

The previous prime is 42005081. The next prime is 42005167. The reversal of 42005127 is 72150024.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42005127 - 2⁸ = 42004871 is a prime.

It is a super-2 number, since 2×42005127² = 3528861388572258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42005167) 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 in 3 ways as a sum of consecutive naturals, for example, 7000852 + ... + 7000857.

It is an arithmetic number, because the mean of its divisors is an integer number (14001710).

Almost surely, 2^42005127 is an apocalyptic number.

42005127 is a deficient number, since it is larger than the sum of its proper divisors (14001713).

42005127 is a wasteful number, since it uses less digits than its factorization.

42005127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14001712.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 42005127 is about 6481.1362429747. The cubic root of 42005127 is about 347.6168080311.

The spelling of 42005127 in words is "forty-two million, five thousand, one hundred twenty-seven".