120445020 has 144 divisors (see below), whose sum is σ = 389975040. Its totient is φ = 30019968.

The previous prime is 120444979. The next prime is 120445079. The reversal of 120445020 is 20544021.

120445020 is a `hidden beast` number, since 120 + 44 + 502 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 120444984 and 120445002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 194271 + ... + 194889.

It is an arithmetic number, because the mean of its divisors is an integer number (2708160).

Almost surely, 2^120445020 is an apocalyptic number.

120445020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120445020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194987520).

120445020 is an abundant number, since it is smaller than the sum of its proper divisors (269530020).

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

120445020 is a wasteful number, since it uses less digits than its factorization.

120445020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 120445020 is about 10974.7446439541. The cubic root of 120445020 is about 493.8513925193.

Adding to 120445020 its reverse (20544021), we get a palindrome (140989041).

Subtracting from 120445020 its reverse (20544021), we obtain a palindrome (99900999).

The spelling of 120445020 in words is "one hundred twenty million, four hundred forty-five thousand, twenty".