42601817 has 2 divisors, whose sum is σ = 42601818. Its totient is φ = 42601816.

The previous prime is 42601759. The next prime is 42601859. The reversal of 42601817 is 71810624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42237001 + 364816 = 6499^2 + 604^2 .

It is a cyclic number.

It is not a de Polignac number, because 42601817 - 2⁸ = 42601561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42601817.

It is not a weakly prime, because it can be changed into another prime (42601417) 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, 21300908 + 21300909.

It is an arithmetic number, because the mean of its divisors is an integer number (21300909).

Almost surely, 2^42601817 is an apocalyptic number.

It is an amenable number.

42601817 is a deficient number, since it is larger than the sum of its proper divisors (1).

42601817 is an equidigital number, since it uses as much as digits as its factorization.

42601817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 42601817 is about 6527.0067412253. The cubic root of 42601817 is about 349.2550604946.

The spelling of 42601817 in words is "forty-two million, six hundred one thousand, eight hundred seventeen".