4042320 has 40 divisors (see below), whose sum is σ = 12531936. Its totient is φ = 1077888.

The previous prime is 4042309. The next prime is 4042327. The reversal of 4042320 is 232404.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 4042320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042327) 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, 8182 + ... + 8661.

Almost surely, 2^4042320 is an apocalyptic number.

4042320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4042320 is an abundant number, since it is smaller than the sum of its proper divisors (8489616).

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

4042320 is a wasteful number, since it uses less digits than its factorization.

4042320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16859 (or 16853 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 4042320 is about 2010.5521629642. The cubic root of 4042320 is about 159.2979658472.

Adding to 4042320 its reverse (232404), we get a palindrome (4274724).

The spelling of 4042320 in words is "four million, forty-two thousand, three hundred twenty".