82134719 has 4 divisors (see below), whose sum is σ = 82156920. Its totient is φ = 82112520.

The previous prime is 82134673. The next prime is 82134721. The reversal of 82134719 is 91743128.

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-82134719 is a prime.

It is a super-2 number, since 2×82134719² = 13492224130417922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82134319) 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, 4064 + ... + 13445.

It is an arithmetic number, because the mean of its divisors is an integer number (20539230).

Almost surely, 2^82134719 is an apocalyptic number.

82134719 is a deficient number, since it is larger than the sum of its proper divisors (22201).

82134719 is a wasteful number, since it uses less digits than its factorization.

82134719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22200.

The product of its digits is 12096, while the sum is 35.

The square root of 82134719 is about 9062.8206977740. The cubic root of 82134719 is about 434.6859388084.

The spelling of 82134719 in words is "eighty-two million, one hundred thirty-four thousand, seven hundred nineteen".