82512429 has 4 divisors (see below), whose sum is σ = 110016576. Its totient is φ = 55008284.

The previous prime is 82512403. The next prime is 82512433. The reversal of 82512429 is 92421528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82512429 - 2⁹ = 82511917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82512429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82512439) 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, 13752069 + ... + 13752074.

It is an arithmetic number, because the mean of its divisors is an integer number (27504144).

Almost surely, 2^82512429 is an apocalyptic number.

It is an amenable number.

82512429 is a deficient number, since it is larger than the sum of its proper divisors (27504147).

82512429 is a wasteful number, since it uses less digits than its factorization.

82512429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27504146.

The product of its digits is 11520, while the sum is 33.

The square root of 82512429 is about 9083.6352304570. The cubic root of 82512429 is about 435.3512449111.

Subtracting 82512429 from its reverse (92421528), we obtain a palindrome (9909099).

The spelling of 82512429 in words is "eighty-two million, five hundred twelve thousand, four hundred twenty-nine".