40442120 has 32 divisors (see below), whose sum is σ = 91287000. Its totient is φ = 16124928.

The previous prime is 40442111. The next prime is 40442123. The reversal of 40442120 is 2124404.

It can be written as a sum of positive squares in 4 ways, for example, as 28922884 + 11519236 = 5378^2 + 3394^2 .

It is not an unprimeable number, because it can be changed into a prime (40442123) 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, 12512 + ... + 15408.

Almost surely, 2^40442120 is an apocalyptic number.

40442120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40442120 is an abundant number, since it is smaller than the sum of its proper divisors (50844880).

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

40442120 is a wasteful number, since it uses less digits than its factorization.

40442120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257 (or 3253 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 40442120 is about 6359.4119224972. The cubic root of 40442120 is about 343.2505995600.

Adding to 40442120 its reverse (2124404), we get a palindrome (42566524).

It can be divided in two parts, 404 and 42120, that added together give a palindrome (42524).

The spelling of 40442120 in words is "forty million, four hundred forty-two thousand, one hundred twenty".