200042125 has 8 divisors (see below), whose sum is σ = 249652728. Its totient is φ = 160033600.

The previous prime is 200042113. The next prime is 200042147. The reversal of 200042125 is 521240002.

It can be written as a sum of positive squares in 4 ways, for example, as 724201 + 199317924 = 851^2 + 14118^2 .

It is not a de Polignac number, because 200042125 - 2⁵ = 200042093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200042099 and 200042108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800044 + ... + 800293.

It is an arithmetic number, because the mean of its divisors is an integer number (31206591).

Almost surely, 2^200042125 is an apocalyptic number.

200042125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

200042125 is a deficient number, since it is larger than the sum of its proper divisors (49610603).

200042125 is an equidigital number, since it uses as much as digits as its factorization.

200042125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600352 (or 1600342 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 200042125 is about 14143.6248889738. The cubic root of 200042125 is about 584.8446028427.

Adding to 200042125 its reverse (521240002), we get a palindrome (721282127).

The spelling of 200042125 in words is "two hundred million, forty-two thousand, one hundred twenty-five".