8420371 has 4 divisors (see below), whose sum is σ = 8463312. Its totient is φ = 8377432.

The previous prime is 8420351. The next prime is 8420393. The reversal of 8420371 is 1730248.

8420371 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8420371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8420311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21175 + ... + 21568.

It is an arithmetic number, because the mean of its divisors is an integer number (2115828).

Almost surely, 2^8420371 is an apocalyptic number.

8420371 is a deficient number, since it is larger than the sum of its proper divisors (42941).

8420371 is a wasteful number, since it uses less digits than its factorization.

8420371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42940.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 8420371 is about 2901.7875525269. The cubic root of 8420371 is about 203.4434641830.

The spelling of 8420371 in words is "eight million, four hundred twenty thousand, three hundred seventy-one".