203040134420 has 48 divisors (see below), whose sum is σ = 435568008960. Its totient is φ = 79467659904.

The previous prime is 203040134411. The next prime is 203040134431. The reversal of 203040134420 is 24431040302.

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, 3940262 + ... + 3991458.

It is an arithmetic number, because the mean of its divisors is an integer number (9074333520).

Almost surely, 2^203040134420 is an apocalyptic number.

203040134420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203040134420 is an abundant number, since it is smaller than the sum of its proper divisors (232527874540).

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

203040134420 is a wasteful number, since it uses less digits than its factorization.

203040134420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55472 (or 55470 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 203040134420 its reverse (24431040302), we get a palindrome (227471174722).

The spelling of 203040134420 in words is "two hundred three billion, forty million, one hundred thirty-four thousand, four hundred twenty".