201742106 has 4 divisors (see below), whose sum is σ = 302613162. Its totient is φ = 100871052.

The previous prime is 201742103. The next prime is 201742109. The reversal of 201742106 is 601247102.

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

It is an interprime number because it is at equal distance from previous prime (201742103) and next prime (201742109).

It can be written as a sum of positive squares in only one way, i.e., 180499225 + 21242881 = 13435^2 + 4609^2 .

It is not an unprimeable number, because it can be changed into a prime (201742103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50435525 + ... + 50435528.

Almost surely, 2^201742106 is an apocalyptic number.

201742106 is a deficient number, since it is larger than the sum of its proper divisors (100871056).

201742106 is a wasteful number, since it uses less digits than its factorization.

201742106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100871055.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 201742106 is about 14203.5948266627. The cubic root of 201742106 is about 586.4966242008.

Adding to 201742106 its reverse (601247102), we get a palindrome (802989208).

The spelling of 201742106 in words is "two hundred one million, seven hundred forty-two thousand, one hundred six".