43720120 has 32 divisors (see below), whose sum is σ = 98813520. Its totient is φ = 17409280.

The previous prime is 43720049. The next prime is 43720123. The reversal of 43720120 is 2102734.

It is a super-2 number, since 2×43720120² = 3822897785628800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43720123) 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, 6975 + ... + 11665.

Almost surely, 2^43720120 is an apocalyptic number.

43720120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43720120 is an abundant number, since it is smaller than the sum of its proper divisors (55093400).

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

43720120 is a wasteful number, since it uses less digits than its factorization.

43720120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4935 (or 4931 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 43720120 is about 6612.1191761794. The cubic root of 43720120 is about 352.2846999393.

Adding to 43720120 its reverse (2102734), we get a palindrome (45822854).

The spelling of 43720120 in words is "forty-three million, seven hundred twenty thousand, one hundred twenty".