105021073 has 2 divisors, whose sum is σ = 105021074. Its totient is φ = 105021072.

The previous prime is 105021071. The next prime is 105021079. The reversal of 105021073 is 370120501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103083409 + 1937664 = 10153^2 + 1392^2 .

It is a cyclic number.

It is not a de Polignac number, because 105021073 - 2¹ = 105021071 is a prime.

It is a super-2 number, since 2×105021073² = 22058851548142658, which contains 22 as substring.

Together with 105021071, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 105021073.

It is not a weakly prime, because it can be changed into another prime (105021071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52510536 + 52510537.

It is an arithmetic number, because the mean of its divisors is an integer number (52510537).

Almost surely, 2^105021073 is an apocalyptic number.

It is an amenable number.

105021073 is a deficient number, since it is larger than the sum of its proper divisors (1).

105021073 is an equidigital number, since it uses as much as digits as its factorization.

105021073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 105021073 is about 10247.9789714851. The cubic root of 105021073 is about 471.8009565444.

Adding to 105021073 its reverse (370120501), we get a palindrome (475141574).

The spelling of 105021073 in words is "one hundred five million, twenty-one thousand, seventy-three".