82142459 has 4 divisors (see below), whose sum is σ = 93877104. Its totient is φ = 70407816.

The previous prime is 82142387. The next prime is 82142477. The reversal of 82142459 is 95424128.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82142459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82142059) 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, 5867312 + ... + 5867325.

It is an arithmetic number, because the mean of its divisors is an integer number (23469276).

Almost surely, 2^82142459 is an apocalyptic number.

82142459 is a deficient number, since it is larger than the sum of its proper divisors (11734645).

82142459 is a wasteful number, since it uses less digits than its factorization.

82142459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11734644.

The product of its digits is 23040, while the sum is 35.

The square root of 82142459 is about 9063.2477070860. The cubic root of 82142459 is about 434.6995926506.

The spelling of 82142459 in words is "eighty-two million, one hundred forty-two thousand, four hundred fifty-nine".