203422120 has 64 divisors (see below), whose sum is σ = 521043840. Its totient is φ = 70752000.

The previous prime is 203422103. The next prime is 203422139. The reversal of 203422120 is 21224302.

It is a junction number, because it is equal to n+sod(n) for n = 203422094 and 203422103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70 + ... + 20170.

It is an arithmetic number, because the mean of its divisors is an integer number (8141310).

Almost surely, 2^203422120 is an apocalyptic number.

203422120 is a gapful number since it is divisible by the number (20) 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 203422120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260521920).

203422120 is an abundant number, since it is smaller than the sum of its proper divisors (317621720).

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

203422120 is a wasteful number, since it uses less digits than its factorization.

203422120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20146 (or 20142 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 203422120 is about 14262.6126638846. The cubic root of 203422120 is about 588.1201491407.

Adding to 203422120 its reverse (21224302), we get a palindrome (224646422).

The spelling of 203422120 in words is "two hundred three million, four hundred twenty-two thousand, one hundred twenty".