201442423522 has 16 divisors (see below), whose sum is σ = 310541771232. Its totient is φ = 97944504480.

The previous prime is 201442423459. The next prime is 201442423537. The reversal of 201442423522 is 225324244102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3975828 + ... + 4026175.

It is an arithmetic number, because the mean of its divisors is an integer number (19408860702).

Almost surely, 2^201442423522 is an apocalyptic number.

201442423522 is a deficient number, since it is larger than the sum of its proper divisors (109099347710).

201442423522 is a wasteful number, since it uses less digits than its factorization.

201442423522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8002353.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 201442423522 its reverse (225324244102), we get a palindrome (426766667624).

The spelling of 201442423522 in words is "two hundred one billion, four hundred forty-two million, four hundred twenty-three thousand, five hundred twenty-two".