201542745 has 8 divisors (see below), whose sum is σ = 322468416. Its totient is φ = 107489456.

The previous prime is 201542743. The next prime is 201542791. The reversal of 201542745 is 547245102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201542745 - 2¹ = 201542743 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201542743) 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, 6718077 + ... + 6718106.

It is an arithmetic number, because the mean of its divisors is an integer number (40308552).

Almost surely, 2^201542745 is an apocalyptic number.

It is an amenable number.

201542745 is a deficient number, since it is larger than the sum of its proper divisors (120925671).

201542745 is a wasteful number, since it uses less digits than its factorization.

201542745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13436191.

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 201542745 is about 14196.5751151466. The cubic root of 201542745 is about 586.3033690729.

Adding to 201542745 its reverse (547245102), we get a palindrome (748787847).

The spelling of 201542745 in words is "two hundred one million, five hundred forty-two thousand, seven hundred forty-five".