8429420 has 12 divisors (see below), whose sum is σ = 17701824. Its totient is φ = 3371760.

The previous prime is 8429411. The next prime is 8429423. The reversal of 8429420 is 249248.

It is not an unprimeable number, because it can be changed into a prime (8429423) 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 3 ways as a sum of consecutive naturals, for example, 210716 + ... + 210755.

It is an arithmetic number, because the mean of its divisors is an integer number (1475152).

Almost surely, 2^8429420 is an apocalyptic number.

It is an amenable number.

8429420 is an abundant number, since it is smaller than the sum of its proper divisors (9272404).

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

8429420 is a wasteful number, since it uses less digits than its factorization.

8429420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421480 (or 421478 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 8429420 is about 2903.3463451679. The cubic root of 8429420 is about 203.5163153212.

The spelling of 8429420 in words is "eight million, four hundred twenty-nine thousand, four hundred twenty".