82126438 has 4 divisors (see below), whose sum is σ = 123189660. Its totient is φ = 41063218.

The previous prime is 82126427. The next prime is 82126469. The reversal of 82126438 is 83462128.

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

It is a congruent number.

It is an unprimeable number.

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, 20531608 + ... + 20531611.

It is an arithmetic number, because the mean of its divisors is an integer number (30797415).

Almost surely, 2^82126438 is an apocalyptic number.

82126438 is a deficient number, since it is larger than the sum of its proper divisors (41063222).

82126438 is a wasteful number, since it uses less digits than its factorization.

82126438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41063221.

The product of its digits is 18432, while the sum is 34.

The square root of 82126438 is about 9062.3638196665. The cubic root of 82126438 is about 434.6713296586.

The spelling of 82126438 in words is "eighty-two million, one hundred twenty-six thousand, four hundred thirty-eight".