82124405 has 8 divisors (see below), whose sum is σ = 107508384. Its totient is φ = 59726800.

The previous prime is 82124389. The next prime is 82124407. The reversal of 82124405 is 50442128.

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 82124405 - 2⁴ = 82124389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82124407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 746531 + ... + 746640.

It is an arithmetic number, because the mean of its divisors is an integer number (13438548).

Almost surely, 2^82124405 is an apocalyptic number.

It is an amenable number.

82124405 is a deficient number, since it is larger than the sum of its proper divisors (25383979).

82124405 is a wasteful number, since it uses less digits than its factorization.

82124405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493187.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 82124405 is about 9062.2516517696. The cubic root of 82124405 is about 434.6677429366.

The spelling of 82124405 in words is "eighty-two million, one hundred twenty-four thousand, four hundred five".