82126439 has 4 divisors (see below), whose sum is σ = 86957424. Its totient is φ = 77295456.

The previous prime is 82126427. The next prime is 82126469. The reversal of 82126439 is 93462128.

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

It is a cyclic number.

It is not a de Polignac number, because 82126439 - 2⁴ = 82126423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82126399 and 82126408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82126469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2415467 + ... + 2415500.

It is an arithmetic number, because the mean of its divisors is an integer number (21739356).

Almost surely, 2^82126439 is an apocalyptic number.

82126439 is a deficient number, since it is larger than the sum of its proper divisors (4830985).

82126439 is a wasteful number, since it uses less digits than its factorization.

82126439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4830984.

The product of its digits is 20736, while the sum is 35.

The square root of 82126439 is about 9062.3638748397. The cubic root of 82126439 is about 434.6713314228.

The spelling of 82126439 in words is "eighty-two million, one hundred twenty-six thousand, four hundred thirty-nine".