8420235 has 16 divisors (see below), whose sum is σ = 13547520. Its totient is φ = 4465760.

The previous prime is 8420233. The next prime is 8420239. The reversal of 8420235 is 5320248.

It is not a de Polignac number, because 8420235 - 2¹ = 8420233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8420233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1396 + ... + 4334.

It is an arithmetic number, because the mean of its divisors is an integer number (846720).

Almost surely, 2^8420235 is an apocalyptic number.

8420235 is a deficient number, since it is larger than the sum of its proper divisors (5127285).

8420235 is a wasteful number, since it uses less digits than its factorization.

8420235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3138.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 8420235 is about 2901.7641186010. The cubic root of 8420235 is about 203.4423688845.

The spelling of 8420235 in words is "eight million, four hundred twenty thousand, two hundred thirty-five".