82129301 has 4 divisors (see below), whose sum is σ = 82149612. Its totient is φ = 82108992.

The previous prime is 82129291. The next prime is 82129331. The reversal of 82129301 is 10392128.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33339076 + 48790225 = 5774^2 + 6985^2 .

It is a cyclic number.

It is not a de Polignac number, because 82129301 - 2⁶ = 82129237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82129331) 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 in 3 ways as a sum of consecutive naturals, for example, 1796 + ... + 12941.

It is an arithmetic number, because the mean of its divisors is an integer number (20537403).

Almost surely, 2^82129301 is an apocalyptic number.

It is an amenable number.

82129301 is a deficient number, since it is larger than the sum of its proper divisors (20311).

82129301 is a wasteful number, since it uses less digits than its factorization.

82129301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20310.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 82129301 is about 9062.5217792842. The cubic root of 82129301 is about 434.6763806084.

The spelling of 82129301 in words is "eighty-two million, one hundred twenty-nine thousand, three hundred one".