40044120 has 32 divisors (see below), whose sum is σ = 120132720. Its totient is φ = 10678400.

The previous prime is 40044119. The next prime is 40044131. The reversal of 40044120 is 2144004.

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 40044120.

It is a congruent number.

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, 166731 + ... + 166970.

Almost surely, 2^40044120 is an apocalyptic number.

40044120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40044120 is an abundant number, since it is smaller than the sum of its proper divisors (80088600).

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

40044120 is a wasteful number, since it uses less digits than its factorization.

40044120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333715 (or 333711 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 40044120 is about 6328.0423513121. The cubic root of 40044120 is about 342.1208833644.

Adding to 40044120 its reverse (2144004), we get a palindrome (42188124).

The spelling of 40044120 in words is "forty million, forty-four thousand, one hundred twenty".