203142220 has 12 divisors (see below), whose sum is σ = 426598704. Its totient is φ = 81256880.

The previous prime is 203142217. The next prime is 203142227. The reversal of 203142220 is 22241302.

203142220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 203142194 and 203142203.

It is not an unprimeable number, because it can be changed into a prime (203142227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5078536 + ... + 5078575.

It is an arithmetic number, because the mean of its divisors is an integer number (35549892).

Almost surely, 2^203142220 is an apocalyptic number.

203142220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203142220 is an abundant number, since it is smaller than the sum of its proper divisors (223456484).

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

203142220 is a wasteful number, since it uses less digits than its factorization.

203142220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10157120 (or 10157118 counting only the distinct ones).

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

The square root of 203142220 is about 14252.7969184999. The cubic root of 203142220 is about 587.8502827360.

Adding to 203142220 its reverse (22241302), we get a palindrome (225383522).

The spelling of 203142220 in words is "two hundred three million, one hundred forty-two thousand, two hundred twenty".