8403420 has 24 divisors (see below), whose sum is σ = 23529744. Its totient is φ = 2240896.

The previous prime is 8403419. The next prime is 8403431. The reversal of 8403420 is 243048.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69969 + ... + 70088.

It is an arithmetic number, because the mean of its divisors is an integer number (980406).

Almost surely, 2^8403420 is an apocalyptic number.

It is an amenable number.

8403420 is an abundant number, since it is smaller than the sum of its proper divisors (15126324).

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

8403420 is a wasteful number, since it uses less digits than its factorization.

8403420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140069 (or 140067 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 8403420 is about 2898.8652952492. The cubic root of 8403420 is about 203.3068555209.

Adding to 8403420 its reverse (243048), we get a palindrome (8646468).

The spelling of 8403420 in words is "eight million, four hundred three thousand, four hundred twenty".