82067421 has 8 divisors (see below), whose sum is σ = 109594944. Its totient is φ = 54625760.

The previous prime is 82067411. The next prime is 82067431. The reversal of 82067421 is 12476028.

It is an interprime number because it is at equal distance from previous prime (82067411) and next prime (82067431).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82067421 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82067411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19200 + ... + 23081.

It is an arithmetic number, because the mean of its divisors is an integer number (13699368).

Almost surely, 2^82067421 is an apocalyptic number.

It is an amenable number.

82067421 is a deficient number, since it is larger than the sum of its proper divisors (27527523).

82067421 is a wasteful number, since it uses less digits than its factorization.

82067421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42931.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 82067421 is about 9059.1070752034. The cubic root of 82067421 is about 434.5671847742.

The spelling of 82067421 in words is "eighty-two million, sixty-seven thousand, four hundred twenty-one".