201423242 has 32 divisors (see below), whose sum is σ = 330511104. Its totient is φ = 91686400.

The previous prime is 201423197. The next prime is 201423251. The reversal of 201423242 is 242324102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182063 + ... + 183165.

It is an arithmetic number, because the mean of its divisors is an integer number (10328472).

Almost surely, 2^201423242 is an apocalyptic number.

201423242 is a deficient number, since it is larger than the sum of its proper divisors (129087862).

201423242 is a wasteful number, since it uses less digits than its factorization.

201423242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 201423242 is about 14192.3656238134. The cubic root of 201423242 is about 586.1874650178.

Adding to 201423242 its reverse (242324102), we get a palindrome (443747344).

The spelling of 201423242 in words is "two hundred one million, four hundred twenty-three thousand, two hundred forty-two".