200342121 has 32 divisors (see below), whose sum is σ = 329564160. Its totient is φ = 105720384.

The previous prime is 200342089. The next prime is 200342123. The reversal of 200342121 is 121243002.

It is not a de Polignac number, because 200342121 - 2⁵ = 200342089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200342121.

It is not an unprimeable number, because it can be changed into a prime (200342123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6856 + ... + 21158.

It is an arithmetic number, because the mean of its divisors is an integer number (10298880).

Almost surely, 2^200342121 is an apocalyptic number.

200342121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

200342121 is a deficient number, since it is larger than the sum of its proper divisors (129222039).

200342121 is a wasteful number, since it uses less digits than its factorization.

200342121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14365.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 200342121 is about 14154.2262593192. The cubic root of 200342121 is about 585.1368136435.

Adding to 200342121 its reverse (121243002), we get a palindrome (321585123).

It can be divided in two parts, 20034 and 2121, that added together give a triangular number (22155 = T₂₁₀).

The spelling of 200342121 in words is "two hundred million, three hundred forty-two thousand, one hundred twenty-one".