201242434 has 4 divisors (see below), whose sum is σ = 301863654. Its totient is φ = 100621216.

The previous prime is 201242417. The next prime is 201242441. The reversal of 201242434 is 434242102.

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., 100942209 + 100300225 = 10047^2 + 10015^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50310607 + ... + 50310610.

Almost surely, 2^201242434 is an apocalyptic number.

201242434 is a deficient number, since it is larger than the sum of its proper divisors (100621220).

201242434 is a wasteful number, since it uses less digits than its factorization.

201242434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100621219.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 201242434 is about 14185.9942901441. The cubic root of 201242434 is about 586.0120150363.

Adding to 201242434 its reverse (434242102), we get a palindrome (635484536).

The spelling of 201242434 in words is "two hundred one million, two hundred forty-two thousand, four hundred thirty-four".