201807442 has 8 divisors (see below), whose sum is σ = 320517756. Its totient is φ = 94968192.

The previous prime is 201807413. The next prime is 201807461. The reversal of 201807442 is 244708102.

It can be written as a sum of positive squares in 2 ways, for example, as 194630401 + 7177041 = 13951^2 + 2679^2 .

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 201807442.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2967723 + ... + 2967790.

Almost surely, 2^201807442 is an apocalyptic number.

201807442 is a deficient number, since it is larger than the sum of its proper divisors (118710314).

201807442 is a wasteful number, since it uses less digits than its factorization.

201807442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5935532.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 201807442 is about 14205.8946215999. The cubic root of 201807442 is about 586.5599314403.

The spelling of 201807442 in words is "two hundred one million, eight hundred seven thousand, four hundred forty-two".