42012127 has 2 divisors, whose sum is σ = 42012128. Its totient is φ = 42012126.

The previous prime is 42012119. The next prime is 42012133. The reversal of 42012127 is 72121024.

It is a happy number.

42012127 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42012127 - 2³ = 42012119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42012107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21006063 + 21006064.

It is an arithmetic number, because the mean of its divisors is an integer number (21006064).

Almost surely, 2^42012127 is an apocalyptic number.

42012127 is a deficient number, since it is larger than the sum of its proper divisors (1).

42012127 is an equidigital number, since it uses as much as digits as its factorization.

42012127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 42012127 is about 6481.6762492429. The cubic root of 42012127 is about 347.6361166463.

It can be divided in two parts, 4201 and 2127, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 42012127 in words is "forty-two million, twelve thousand, one hundred twenty-seven".