4031420 has 36 divisors (see below), whose sum is σ = 8998920. Its totient is φ = 1512864.

The previous prime is 4031399. The next prime is 4031441. The reversal of 4031420 is 241304.

It is an interprime number because it is at equal distance from previous prime (4031399) and next prime (4031441).

It is a junction number, because it is equal to n+sod(n) for n = 4031395 and 4031404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39089 + ... + 39191.

It is an arithmetic number, because the mean of its divisors is an integer number (249970).

Almost surely, 2^4031420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4031420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4499460).

4031420 is an abundant number, since it is smaller than the sum of its proper divisors (4967500).

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

4031420 is a wasteful number, since it uses less digits than its factorization.

4031420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 4031420 is about 2007.8396350306. The cubic root of 4031420 is about 159.1546561603.

Adding to 4031420 its reverse (241304), we get a palindrome (4272724).

The spelling of 4031420 in words is "four million, thirty-one thousand, four hundred twenty".