4055040 has 168 divisors, whose sum is σ = 15334488. Its totient is φ = 983040.

The previous prime is 4055033. The next prime is 4055053. The reversal of 4055040 is 405504.

Added to its reverse (405504) it gives a square (4460544 = 2112²).

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 368635 + ... + 368645.

Almost surely, 2^4055040 is an apocalyptic number.

4055040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4055040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7667244).

4055040 is an abundant number, since it is smaller than the sum of its proper divisors (11279448).

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

4055040 is a wasteful number, since it uses less digits than its factorization.

4055040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48 (or 21 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 4055040 is about 2013.7129884867. The cubic root of 4055040 is about 159.4648789460.

Adding to 4055040 its reverse (405504), we get a square (4460544 = 2112²).

It can be divided in two parts, 405 and 5040, that added together give a palindrome (5445).

The spelling of 4055040 in words is "four million, fifty-five thousand, forty".