4006420 has 24 divisors (see below), whose sum is σ = 9178848. Its totient is φ = 1456800.

The previous prime is 4006417. The next prime is 4006423. The reversal of 4006420 is 246004.

It is an interprime number because it is at equal distance from previous prime (4006417) and next prime (4006423).

It is a junction number, because it is equal to n+sod(n) for n = 4006394 and 4006403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4006423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8886 + ... + 9325.

It is an arithmetic number, because the mean of its divisors is an integer number (382452).

Almost surely, 2^4006420 is an apocalyptic number.

It is an amenable number.

4006420 is an abundant number, since it is smaller than the sum of its proper divisors (5172428).

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

4006420 is a wasteful number, since it uses less digits than its factorization.

4006420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18231 (or 18229 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 4006420 is about 2001.6043565100. The cubic root of 4006420 is about 158.8249857582.

The spelling of 4006420 in words is "four million, six thousand, four hundred twenty".