203042120 has 16 divisors (see below), whose sum is σ = 456844860. Its totient is φ = 81216832.

The previous prime is 203042117. The next prime is 203042123. The reversal of 203042120 is 21240302.

It is an interprime number because it is at equal distance from previous prime (203042117) and next prime (203042123).

It can be written as a sum of positive squares in 2 ways, for example, as 185885956 + 17156164 = 13634^2 + 4142^2 .

It is a super-2 number, since 2×203042120² = 82452204988188800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203042095 and 203042104.

It is not an unprimeable number, because it can be changed into a prime (203042123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2537987 + ... + 2538066.

Almost surely, 2^203042120 is an apocalyptic number.

203042120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203042120 is an abundant number, since it is smaller than the sum of its proper divisors (253802740).

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

203042120 is a wasteful number, since it uses less digits than its factorization.

203042120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076064 (or 5076060 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 203042120 is about 14249.2848943377. The cubic root of 203042120 is about 587.7537108512.

Adding to 203042120 its reverse (21240302), we get a palindrome (224282422).

The spelling of 203042120 in words is "two hundred three million, forty-two thousand, one hundred twenty".