42012107 has 2 divisors, whose sum is σ = 42012108. Its totient is φ = 42012106.

The previous prime is 42012079. The next prime is 42012119. The reversal of 42012107 is 70121024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42012107 - 2¹⁰ = 42011083 is a prime.

It is not a weakly prime, because it can be changed into another prime (42012127) 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, 21006053 + 21006054.

It is an arithmetic number, because the mean of its divisors is an integer number (21006054).

Almost surely, 2^42012107 is an apocalyptic number.

42012107 is a deficient number, since it is larger than the sum of its proper divisors (1).

42012107 is an equidigital number, since it uses as much as digits as its factorization.

42012107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 42012107 is about 6481.6747064320. The cubic root of 42012107 is about 347.6360614819.

The spelling of 42012107 in words is "forty-two million, twelve thousand, one hundred seven".