203435143420 has 12 divisors (see below), whose sum is σ = 427213801224. Its totient is φ = 81374057360.

The previous prime is 203435143381. The next prime is 203435143423. The reversal of 203435143420 is 24341534302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203435143423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5085878566 + ... + 5085878605.

It is an arithmetic number, because the mean of its divisors is an integer number (35601150102).

Almost surely, 2^203435143420 is an apocalyptic number.

203435143420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203435143420 is an abundant number, since it is smaller than the sum of its proper divisors (223778657804).

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

203435143420 is a wasteful number, since it uses less digits than its factorization.

203435143420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10171757180 (or 10171757178 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 203435143420 its reverse (24341534302), we get a palindrome (227776677722).

The spelling of 203435143420 in words is "two hundred three billion, four hundred thirty-five million, one hundred forty-three thousand, four hundred twenty".