201044121442 has 4 divisors (see below), whose sum is σ = 301566182166. Its totient is φ = 100522060720.

The previous prime is 201044121427. The next prime is 201044121491. The reversal of 201044121442 is 244121440102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 169817343921 + 31226777521 = 412089^2 + 176711^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50261030359 + ... + 50261030362.

Almost surely, 2^201044121442 is an apocalyptic number.

201044121442 is a deficient number, since it is larger than the sum of its proper divisors (100522060724).

201044121442 is a wasteful number, since it uses less digits than its factorization.

201044121442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100522060723.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 201044121442 its reverse (244121440102), we get a palindrome (445165561544).

The spelling of 201044121442 in words is "two hundred one billion, forty-four million, one hundred twenty-one thousand, four hundred forty-two".