201340213442 has 4 divisors (see below), whose sum is σ = 302010320166. Its totient is φ = 100670106720.

The previous prime is 201340213387. The next prime is 201340213483. The reversal of 201340213442 is 244312043102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244312043102 = 2 ⋅122156021551.

It can be written as a sum of positive squares in only one way, i.e., 190987354441 + 10352859001 = 437021^2 + 101749^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50335053359 + ... + 50335053362.

Almost surely, 2^201340213442 is an apocalyptic number.

201340213442 is a deficient number, since it is larger than the sum of its proper divisors (100670106724).

201340213442 is a wasteful number, since it uses less digits than its factorization.

201340213442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100670106723.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 201340213442 its reverse (244312043102), we get a palindrome (445652256544).

The spelling of 201340213442 in words is "two hundred one billion, three hundred forty million, two hundred thirteen thousand, four hundred forty-two".