42028102001 has 2 divisors, whose sum is σ = 42028102002. Its totient is φ = 42028102000.

The previous prime is 42028101991. The next prime is 42028102027. The reversal of 42028102001 is 10020182024.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41443187776 + 584914225 = 203576^2 + 24185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42028102001 is a prime.

It is a super-2 number, since 2×42028102001² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42028101001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21014051000 + 21014051001.

It is an arithmetic number, because the mean of its divisors is an integer number (21014051001).

Almost surely, 2^42028102001 is an apocalyptic number.

It is an amenable number.

42028102001 is a deficient number, since it is larger than the sum of its proper divisors (1).

42028102001 is an equidigital number, since it uses as much as digits as its factorization.

42028102001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 42028102001 its reverse (10020182024), we get a palindrome (52048284025).

The spelling of 42028102001 in words is "forty-two billion, twenty-eight million, one hundred two thousand, one".