82421029 has 8 divisors (see below), whose sum is σ = 88103232. Its totient is φ = 76913760.

The previous prime is 82420973. The next prime is 82421039. The reversal of 82421029 is 92012428.

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

It is a cyclic number.

It is not a de Polignac number, because 82421029 - 2¹⁵ = 82388261 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82420988 and 82421006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82421039) 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 7 ways as a sum of consecutive naturals, for example, 42759 + ... + 44644.

It is an arithmetic number, because the mean of its divisors is an integer number (11012904).

Almost surely, 2^82421029 is an apocalyptic number.

It is an amenable number.

82421029 is a deficient number, since it is larger than the sum of its proper divisors (5682203).

82421029 is a wasteful number, since it uses less digits than its factorization.

82421029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87467.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 82421029 is about 9078.6028110057. The cubic root of 82421029 is about 435.1904376013.

The spelling of 82421029 in words is "eighty-two million, four hundred twenty-one thousand, twenty-nine".