201242442031420 has 48 divisors (see below), whose sum is σ = 431782281443520. Its totient is φ = 78758170889216.

The previous prime is 201242442031409. The next prime is 201242442031459. The reversal of 201242442031420 is 24130244242102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264036397 + ... + 264797476.

It is an arithmetic number, because the mean of its divisors is an integer number (8995464196740).

Almost surely, 2^{201242442031420} is an apocalyptic number.

201242442031420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201242442031420 is an abundant number, since it is smaller than the sum of its proper divisors (230539839412100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201242442031420 is a wasteful number, since it uses less digits than its factorization.

201242442031420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528834294 (or 528834292 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 201242442031420 its reverse (24130244242102), we get a palindrome (225372686273522).

The spelling of 201242442031420 in words is "two hundred one trillion, two hundred forty-two billion, four hundred forty-two million, thirty-one thousand, four hundred twenty".