201044423420 has 24 divisors (see below), whose sum is σ = 429114493248. Its totient is φ = 79099444800.

The previous prime is 201044423407. The next prime is 201044423423. The reversal of 201044423420 is 24324440102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 201044423420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201044423423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82394036 + ... + 82396475.

It is an arithmetic number, because the mean of its divisors is an integer number (17879770552).

Almost surely, 2^201044423420 is an apocalyptic number.

201044423420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201044423420 is an abundant number, since it is smaller than the sum of its proper divisors (228070069828).

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

201044423420 is a wasteful number, since it uses less digits than its factorization.

201044423420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164790581 (or 164790579 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 201044423420 its reverse (24324440102), we get a palindrome (225368863522).

The spelling of 201044423420 in words is "two hundred one billion, forty-four million, four hundred twenty-three thousand, four hundred twenty".