42013187 has 2 divisors, whose sum is σ = 42013188. Its totient is φ = 42013186.

The previous prime is 42013163. The next prime is 42013207. The reversal of 42013187 is 78131024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42013187 - 2¹⁰ = 42012163 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42016187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21006593 + 21006594.

It is an arithmetic number, because the mean of its divisors is an integer number (21006594).

Almost surely, 2^42013187 is an apocalyptic number.

42013187 is a deficient number, since it is larger than the sum of its proper divisors (1).

42013187 is an equidigital number, since it uses as much as digits as its factorization.

42013187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 42013187 is about 6481.7580176986. The cubic root of 42013187 is about 347.6390403353.

The spelling of 42013187 in words is "forty-two million, thirteen thousand, one hundred eighty-seven".