82457742 has 8 divisors (see below), whose sum is σ = 164915496. Its totient is φ = 27485912.

The previous prime is 82457707. The next prime is 82457743. The reversal of 82457742 is 24775428.

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

82457742 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 82457742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82457743) 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, 6871473 + ... + 6871484.

It is an arithmetic number, because the mean of its divisors is an integer number (20614437).

Almost surely, 2^82457742 is an apocalyptic number.

82457742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82457742 is a wasteful number, since it uses less digits than its factorization.

82457742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13742962.

The product of its digits is 125440, while the sum is 39.

The square root of 82457742 is about 9080.6245379930. The cubic root of 82457742 is about 435.2550439891.

The spelling of 82457742 in words is "eighty-two million, four hundred fifty-seven thousand, seven hundred forty-two".