86842421 has 8 divisors (see below), whose sum is σ = 87825600. Its totient is φ = 85863232.

The previous prime is 86842403. The next prime is 86842423. The reversal of 86842421 is 12424868.

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 86842421 - 2²² = 82648117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86842423) 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, 67046 + ... + 68328.

It is an arithmetic number, because the mean of its divisors is an integer number (10978200).

Almost surely, 2^86842421 is an apocalyptic number.

It is an amenable number.

86842421 is a deficient number, since it is larger than the sum of its proper divisors (983179).

86842421 is a wasteful number, since it uses less digits than its factorization.

86842421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995.

The product of its digits is 24576, while the sum is 35.

The square root of 86842421 is about 9318.9281035965. The cubic root of 86842421 is about 442.8370755636.

The spelling of 86842421 in words is "eighty-six million, eight hundred forty-two thousand, four hundred twenty-one".