201043421192 has 32 divisors (see below), whose sum is σ = 378234650520. Its totient is φ = 100180999680.

The previous prime is 201043421191. The next prime is 201043421209. The reversal of 201043421192 is 291124340102.

It can be written as a sum of positive squares in 4 ways, for example, as 118918763716 + 82124657476 = 344846^2 + 286574^2 .

It is not an unprimeable number, because it can be changed into a prime (201043421191) 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, 16531178 + ... + 16543334.

Almost surely, 2^201043421192 is an apocalyptic number.

It is an amenable number.

201043421192 is a deficient number, since it is larger than the sum of its proper divisors (177191229328).

201043421192 is a wasteful number, since it uses less digits than its factorization.

201043421192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19001 (or 18997 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 201043421192 its reverse (291124340102), we get a palindrome (492167761294).

The spelling of 201043421192 in words is "two hundred one billion, forty-three million, four hundred twenty-one thousand, one hundred ninety-two".