82122437 has 4 divisors (see below), whose sum is σ = 82463436. Its totient is φ = 81781440.

The previous prime is 82122421. The next prime is 82122449. The reversal of 82122437 is 73422128.

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 38019556 + 44102881 = 6166^2 + 6641^2 .

It is a cyclic number.

It is not a de Polignac number, because 82122437 - 2⁴ = 82122421 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 (82122457) 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, 170138 + ... + 170619.

It is an arithmetic number, because the mean of its divisors is an integer number (20615859).

Almost surely, 2^82122437 is an apocalyptic number.

It is an amenable number.

82122437 is a deficient number, since it is larger than the sum of its proper divisors (340999).

82122437 is a wasteful number, since it uses less digits than its factorization.

82122437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340998.

The product of its digits is 5376, while the sum is 29.

The square root of 82122437 is about 9062.1430688331. The cubic root of 82122437 is about 434.6642708345.

The spelling of 82122437 in words is "eighty-two million, one hundred twenty-two thousand, four hundred thirty-seven".