8420535 has 12 divisors (see below), whose sum is σ = 14595672. Its totient is φ = 4490928.

The previous prime is 8420521. The next prime is 8420543. The reversal of 8420535 is 5350248.

8420535 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8420535 - 2⁴ = 8420519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8420499 and 8420508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93517 + ... + 93606.

It is an arithmetic number, because the mean of its divisors is an integer number (1216306).

Almost surely, 2^8420535 is an apocalyptic number.

8420535 is a deficient number, since it is larger than the sum of its proper divisors (6175137).

8420535 is a wasteful number, since it uses less digits than its factorization.

8420535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187134 (or 187131 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 8420535 is about 2901.8158108329. The cubic root of 8420535 is about 203.4447849685. Note that the first 3 decimals are identical.

The spelling of 8420535 in words is "eight million, four hundred twenty thousand, five hundred thirty-five".