8125420 has 12 divisors (see below), whose sum is σ = 17063424. Its totient is φ = 3250160.

The previous prime is 8125391. The next prime is 8125427. The reversal of 8125420 is 245218.

It is a junction number, because it is equal to n+sod(n) for n = 8125391 and 8125400.

It is not an unprimeable number, because it can be changed into a prime (8125427) 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, 203116 + ... + 203155.

It is an arithmetic number, because the mean of its divisors is an integer number (1421952).

Almost surely, 2^8125420 is an apocalyptic number.

It is an amenable number.

8125420 is an abundant number, since it is smaller than the sum of its proper divisors (8938004).

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

8125420 is a wasteful number, since it uses less digits than its factorization.

8125420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406280 (or 406278 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 8125420 is about 2850.5122346694. The cubic root of 8125420 is about 201.0397518797.

The spelling of 8125420 in words is "eight million, one hundred twenty-five thousand, four hundred twenty".