42003061 has 2 divisors, whose sum is σ = 42003062. Its totient is φ = 42003060.

The previous prime is 42003023. The next prime is 42003067. The reversal of 42003061 is 16030024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28826161 + 13176900 = 5369^2 + 3630^2 .

It is a cyclic number.

It is not a de Polignac number, because 42003061 - 2¹⁵ = 41970293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42003067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21001530 + 21001531.

It is an arithmetic number, because the mean of its divisors is an integer number (21001531).

Almost surely, 2^42003061 is an apocalyptic number.

It is an amenable number.

42003061 is a deficient number, since it is larger than the sum of its proper divisors (1).

42003061 is an equidigital number, since it uses as much as digits as its factorization.

42003061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 42003061 is about 6480.9768553822. The cubic root of 42003061 is about 347.6111088213.

Adding to 42003061 its reverse (16030024), we get a palindrome (58033085).

The spelling of 42003061 in words is "forty-two million, three thousand, sixty-one".