73105129 has 4 divisors (see below), whose sum is σ = 73527876. Its totient is φ = 72682384.

The previous prime is 73105093. The next prime is 73105133. The reversal of 73105129 is 92150137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92150137 = 1109 ⋅83093.

It can be written as a sum of positive squares in 2 ways, for example, as 32490000 + 40615129 = 5700^2 + 6373^2 .

It is a cyclic number.

It is not a de Polignac number, because 73105129 - 2⁷ = 73105001 is a prime.

It is a super-2 number, since 2×73105129² = 10688719772213282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73105097 and 73105106.

It is not an unprimeable number, because it can be changed into a prime (73105139) 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 in 3 ways as a sum of consecutive naturals, for example, 211114 + ... + 211459.

It is an arithmetic number, because the mean of its divisors is an integer number (18381969).

Almost surely, 2^73105129 is an apocalyptic number.

It is an amenable number.

73105129 is a deficient number, since it is larger than the sum of its proper divisors (422747).

73105129 is a wasteful number, since it uses less digits than its factorization.

73105129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422746.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 73105129 is about 8550.1537413078. The cubic root of 73105129 is about 418.1344488634.

The spelling of 73105129 in words is "seventy-three million, one hundred five thousand, one hundred twenty-nine".