201942530 has 16 divisors (see below), whose sum is σ = 379301184. Its totient is φ = 77264880.

The previous prime is 201942529. The next prime is 201942539. The reversal of 201942530 is 35249102.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201942530.

It is not an unprimeable number, because it can be changed into a prime (201942539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438776 + ... + 439235.

It is an arithmetic number, because the mean of its divisors is an integer number (23706324).

Almost surely, 2^201942530 is an apocalyptic number.

201942530 is a deficient number, since it is larger than the sum of its proper divisors (177358654).

201942530 is a wasteful number, since it uses less digits than its factorization.

201942530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878041.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 201942530 is about 14210.6484721845. The cubic root of 201942530 is about 586.6907814783.

The spelling of 201942530 in words is "two hundred one million, nine hundred forty-two thousand, five hundred thirty".