4000420 has 24 divisors (see below), whose sum is σ = 8467200. Its totient is φ = 1587552.

The previous prime is 4000379. The next prime is 4000439. The reversal of 4000420 is 240004.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 4000397 and 4000406.

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, 2061 + ... + 3499.

It is an arithmetic number, because the mean of its divisors is an integer number (352800).

Almost surely, 2^4000420 is an apocalyptic number.

It is an amenable number.

4000420 is an abundant number, since it is smaller than the sum of its proper divisors (4466780).

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

4000420 is a wasteful number, since it uses less digits than its factorization.

4000420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587 (or 1585 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 4000420 is about 2000.1049972439. The cubic root of 4000420 is about 158.7456609061.

Adding to 4000420 its reverse (240004), we get a palindrome (4240424).

The spelling of 4000420 in words is "four million, four hundred twenty", and thus it is an aban number.