201433243420 has 24 divisors (see below), whose sum is σ = 423019195200. Its totient is φ = 80571509952.

The previous prime is 201433243411. The next prime is 201433243481. The reversal of 201433243420 is 24342334102.

It is a congruent 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, 1172386 + ... + 1333174.

It is an arithmetic number, because the mean of its divisors is an integer number (17625799800).

Almost surely, 2^201433243420 is an apocalyptic number.

201433243420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201433243420 is an abundant number, since it is smaller than the sum of its proper divisors (221585951780).

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

201433243420 is a wasteful number, since it uses less digits than its factorization.

201433243420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223437 (or 223435 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 201433243420 its reverse (24342334102), we get a palindrome (225775577522).

The spelling of 201433243420 in words is "two hundred one billion, four hundred thirty-three million, two hundred forty-three thousand, four hundred twenty".