120100056 has 24 divisors (see below), whose sum is σ = 300384420. Its totient is φ = 40015456.

The previous prime is 120100051. The next prime is 120100061. The reversal of 120100056 is 650001021.

It is an interprime number because it is at equal distance from previous prime (120100051) and next prime (120100061).

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120100051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52570 + ... + 54806.

Almost surely, 2^120100056 is an apocalyptic number.

It is an amenable number.

120100056 is an abundant number, since it is smaller than the sum of its proper divisors (180284364).

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

120100056 is an frugal number, since it uses more digits than its factorization.

120100056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4483 (or 2242 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 120100056 is about 10959.0171092119. The cubic root of 120100056 is about 493.3794652908.

Adding to 120100056 its reverse (650001021), we get a palindrome (770101077).

The spelling of 120100056 in words is "one hundred twenty million, one hundred thousand, fifty-six".