42012017 has 2 divisors, whose sum is σ = 42012018. Its totient is φ = 42012016.

The previous prime is 42011993. The next prime is 42012073. The reversal of 42012017 is 71021024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41938576 + 73441 = 6476^2 + 271^2 .

It is a cyclic number.

It is not a de Polignac number, because 42012017 - 2¹⁰ = 42010993 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42011986 and 42012004.

It is not a weakly prime, because it can be changed into another prime (42012077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21006008 + 21006009.

It is an arithmetic number, because the mean of its divisors is an integer number (21006009).

Almost surely, 2^42012017 is an apocalyptic number.

It is an amenable number.

42012017 is a deficient number, since it is larger than the sum of its proper divisors (1).

42012017 is an equidigital number, since it uses as much as digits as its factorization.

42012017 is an evil number, because the sum of its binary digits is even.

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

The square root of 42012017 is about 6481.6677637781. The cubic root of 42012017 is about 347.6358132418.

The spelling of 42012017 in words is "forty-two million, twelve thousand, seventeen".