98421 has 8 divisors (see below), whose sum is σ = 133920. Its totient is φ = 64272.

The previous prime is 98419. The next prime is 98429. The reversal of 98421 is 12489.

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

It is not a de Polignac number, because 98421 - 2¹ = 98419 is a prime.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 98391 and 98400.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 98421.

It is not an unprimeable number, because it can be changed into a prime (98429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151 + ... + 468.

It is an arithmetic number, because the mean of its divisors is an integer number (16740).

2⁹⁸⁴²¹ is an apocalyptic number.

It is an amenable number.

98421 is a deficient number, since it is larger than the sum of its proper divisors (35499).

98421 is a wasteful number, since it uses less digits than its factorization.

98421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675.

The product of its digits is 576, while the sum is 24.

The square root of 98421 is about 313.7212138189. The cubic root of 98421 is about 46.1702887996.

The spelling of 98421 in words is "ninety-eight thousand, four hundred twenty-one".