8421294 has 64 divisors (see below), whose sum is σ = 20712960. Its totient is φ = 2229120.

The previous prime is 8421251. The next prime is 8421403. The reversal of 8421294 is 4921248.

8421294 = T₉₃₂ + T₉₃₃ + ... + T₉₅₀.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 48592 + ... + 48764.

It is an arithmetic number, because the mean of its divisors is an integer number (323640).

Almost surely, 2^8421294 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8421294, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10356480).

8421294 is an abundant number, since it is smaller than the sum of its proper divisors (12291666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8421294 is a wasteful number, since it uses less digits than its factorization.

8421294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265.

The product of its digits is 4608, while the sum is 30.

The square root of 8421294 is about 2901.9465880681. The cubic root of 8421294 is about 203.4508974049.

The spelling of 8421294 in words is "eight million, four hundred twenty-one thousand, two hundred ninety-four".