201545242 has 16 divisors (see below), whose sum is σ = 306597312. Its totient is φ = 99354240.

The previous prime is 201545237. The next prime is 201545243. The reversal of 201545242 is 242545102.

It is not an unprimeable number, because it can be changed into a prime (201545243) 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 7 ways as a sum of consecutive naturals, for example, 53067 + ... + 56737.

It is an arithmetic number, because the mean of its divisors is an integer number (19162332).

Almost surely, 2^201545242 is an apocalyptic number.

201545242 is a deficient number, since it is larger than the sum of its proper divisors (105052070).

201545242 is a wasteful number, since it uses less digits than its factorization.

201545242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4053.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 201545242 is about 14196.6630586205. The cubic root of 201545242 is about 586.3057903846.

The spelling of 201545242 in words is "two hundred one million, five hundred forty-five thousand, two hundred forty-two".