120003620 has 72 divisors (see below), whose sum is σ = 290340288. Its totient is φ = 41313600.

The previous prime is 120003613. The next prime is 120003623. The reversal of 120003620 is 26300021.

It is a junction number, because it is equal to n+sod(n) for n = 120003595 and 120003604.

It is not an unprimeable number, because it can be changed into a prime (120003623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78665 + ... + 80175.

It is an arithmetic number, because the mean of its divisors is an integer number (4032504).

Almost surely, 2^120003620 is an apocalyptic number.

120003620 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 120003620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145170144).

120003620 is an abundant number, since it is smaller than the sum of its proper divisors (170336668).

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

120003620 is a wasteful number, since it uses less digits than its factorization.

120003620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569 (or 1548 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 120003620 is about 10954.6163784954. The cubic root of 120003620 is about 493.2473746427.

Adding to 120003620 its reverse (26300021), we get a palindrome (146303641).

The spelling of 120003620 in words is "one hundred twenty million, three thousand, six hundred twenty".