82842405 has 8 divisors (see below), whose sum is σ = 132547872. Its totient is φ = 44182608.

The previous prime is 82842401. The next prime is 82842421. The reversal of 82842405 is 50424828.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82842405 - 2² = 82842401 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82842401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2761399 + ... + 2761428.

It is an arithmetic number, because the mean of its divisors is an integer number (16568484).

Almost surely, 2^82842405 is an apocalyptic number.

It is an amenable number.

82842405 is a deficient number, since it is larger than the sum of its proper divisors (49705467).

82842405 is a wasteful number, since it uses less digits than its factorization.

82842405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5522835.

The product of its (nonzero) digits is 20480, while the sum is 33.

The square root of 82842405 is about 9101.7803203549. The cubic root of 82842405 is about 435.9308116932.

The spelling of 82842405 in words is "eighty-two million, eight hundred forty-two thousand, four hundred five".