201040442 has 8 divisors (see below), whose sum is σ = 305194176. Its totient is φ = 99309052.

The previous prime is 201040423. The next prime is 201040457. The reversal of 201040442 is 244040102.

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

It is a self number, because there is not a number n which added to its sum of digits gives 201040442.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 605378 + ... + 605709.

It is an arithmetic number, because the mean of its divisors is an integer number (38149272).

Almost surely, 2^201040442 is an apocalyptic number.

201040442 is a deficient number, since it is larger than the sum of its proper divisors (104153734).

201040442 is a wasteful number, since it uses less digits than its factorization.

201040442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211172.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 201040442 is about 14178.8730863916. The cubic root of 201040442 is about 585.8158844916.

Adding to 201040442 its reverse (244040102), we get a palindrome (445080544).

The spelling of 201040442 in words is "two hundred one million, forty thousand, four hundred forty-two".