200542140 has 72 divisors (see below), whose sum is σ = 609488880. Its totient is φ = 53374464.

The previous prime is 200542099. The next prime is 200542141. The reversal of 200542140 is 41245002.

200542140 is a `hidden beast` number, since 200 + 5 + 421 + 40 = 666.

200542140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200542141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153972 + ... + 155268.

Almost surely, 2^200542140 is an apocalyptic number.

200542140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200542140 is an abundant number, since it is smaller than the sum of its proper divisors (408946740).

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

200542140 is a wasteful number, since it uses less digits than its factorization.

200542140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171 (or 2166 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 200542140 is about 14161.2901954589. The cubic root of 200542140 is about 585.3314798997.

Adding to 200542140 its reverse (41245002), we get a palindrome (241787142).

The spelling of 200542140 in words is "two hundred million, five hundred forty-two thousand, one hundred forty".