201212842 has 8 divisors (see below), whose sum is σ = 305640000. Its totient is φ = 99332844.

The previous prime is 201212839. The next prime is 201212849. The reversal of 201212842 is 248212102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (201212849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 636592 + ... + 636907.

It is an arithmetic number, because the mean of its divisors is an integer number (38205000).

Almost surely, 2^201212842 is an apocalyptic number.

201212842 is a deficient number, since it is larger than the sum of its proper divisors (104427158).

201212842 is a wasteful number, since it uses less digits than its factorization.

201212842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273580.

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 201212842 is about 14184.9512512381. The cubic root of 201212842 is about 585.9832899521.

Adding to 201212842 its reverse (248212102), we get a palindrome (449424944).

The spelling of 201212842 in words is "two hundred one million, two hundred twelve thousand, eight hundred forty-two".