8195421 has 8 divisors (see below), whose sum is σ = 11767840. Its totient is φ = 5043312.

The previous prime is 8195399. The next prime is 8195423. The reversal of 8195421 is 1245918.

It is a happy number.

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

It is not a de Polignac number, because 8195421 - 2⁷ = 8195293 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8195423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105031 + ... + 105108.

It is an arithmetic number, because the mean of its divisors is an integer number (1470980).

Almost surely, 2^8195421 is an apocalyptic number.

It is an amenable number.

8195421 is a deficient number, since it is larger than the sum of its proper divisors (3572419).

8195421 is a wasteful number, since it uses less digits than its factorization.

8195421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210155.

The product of its digits is 2880, while the sum is 30.

The square root of 8195421 is about 2862.7645729260. The cubic root of 8195421 is about 201.6154252102.

The spelling of 8195421 in words is "eight million, one hundred ninety-five thousand, four hundred twenty-one".