8420854 has 8 divisors (see below), whose sum is σ = 13602960. Its totient is φ = 3886536.

The previous prime is 8420843. The next prime is 8420869. The reversal of 8420854 is 4580248.

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

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 3 ways as a sum of consecutive naturals, for example, 161914 + ... + 161965.

It is an arithmetic number, because the mean of its divisors is an integer number (1700370).

Almost surely, 2^8420854 is an apocalyptic number.

8420854 is a deficient number, since it is larger than the sum of its proper divisors (5182106).

8420854 is a wasteful number, since it uses less digits than its factorization.

8420854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323894.

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 8420854 is about 2901.8707758961. The cubic root of 8420854 is about 203.4473540082.

Subtracting from 8420854 its reverse (4580248), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 8420854 in words is "eight million, four hundred twenty thousand, eight hundred fifty-four".