43442120 has 32 divisors (see below), whose sum is σ = 98721720. Its totient is φ = 17203200.

The previous prime is 43442111. The next prime is 43442137. The reversal of 43442120 is 2124434.

It can be written as a sum of positive squares in 4 ways, for example, as 42954916 + 487204 = 6554^2 + 698^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 43442092 and 43442101.

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, 1337 + ... + 9416.

Almost surely, 2^43442120 is an apocalyptic number.

43442120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43442120 is an abundant number, since it is smaller than the sum of its proper divisors (55279600).

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

43442120 is a wasteful number, since it uses less digits than its factorization.

43442120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10865 (or 10861 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 43442120 is about 6591.0636470907. The cubic root of 43442120 is about 351.5364291910.

Adding to 43442120 its reverse (2124434), we get a palindrome (45566554).

The spelling of 43442120 in words is "forty-three million, four hundred forty-two thousand, one hundred twenty".