4156420 has 12 divisors (see below), whose sum is σ = 8728524. Its totient is φ = 1662560.

The previous prime is 4156417. The next prime is 4156433. The reversal of 4156420 is 246514.

4156420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 719104 + 3437316 = 848^2 + 1854^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4156391 and 4156400.

It is an unprimeable number.

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, 103891 + ... + 103930.

It is an arithmetic number, because the mean of its divisors is an integer number (727377).

Almost surely, 2^4156420 is an apocalyptic number.

It is an amenable number.

4156420 is an abundant number, since it is smaller than the sum of its proper divisors (4572104).

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

4156420 is a wasteful number, since it uses less digits than its factorization.

4156420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207830 (or 207828 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 4156420 is about 2038.7299968363. The cubic root of 4156420 is about 160.7828818522.

The spelling of 4156420 in words is "four million, one hundred fifty-six thousand, four hundred twenty".