201422143 has 6 divisors (see below), whose sum is σ = 218108184. Its totient is φ = 185927976.

The previous prime is 201422093. The next prime is 201422147. The reversal of 201422143 is 341224102.

201422143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201422143 - 2¹³ = 201413951 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201422143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201422147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 595755 + ... + 596092.

It is an arithmetic number, because the mean of its divisors is an integer number (36351364).

Almost surely, 2^201422143 is an apocalyptic number.

201422143 is a deficient number, since it is larger than the sum of its proper divisors (16686041).

201422143 is a wasteful number, since it uses less digits than its factorization.

201422143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191873 (or 1191860 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 201422143 is about 14192.3269057614. The cubic root of 201422143 is about 586.1863989025.

Adding to 201422143 its reverse (341224102), we get a palindrome (542646245).

The spelling of 201422143 in words is "two hundred one million, four hundred twenty-two thousand, one hundred forty-three".