203400421330240 has 56 divisors (see below), whose sum is σ = 484448183654400. Its totient is φ = 81343214350848.

The previous prime is 203400421330229. The next prime is 203400421330247. The reversal of 203400421330240 is 42033124004302.

It is a super-2 number, since 2×203400421330240² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203400421330199 and 203400421330208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203400421330247) 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, 64689192 + ... + 67760551.

It is an arithmetic number, because the mean of its divisors is an integer number (8650860422400).

Almost surely, 2^{203400421330240} is an apocalyptic number.

203400421330240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203400421330240 is an abundant number, since it is smaller than the sum of its proper divisors (281047762324160).

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

203400421330240 is a wasteful number, since it uses less digits than its factorization.

203400421330240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132454559 (or 132454549 counting only the distinct ones).

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

Adding to 203400421330240 its reverse (42033124004302), we get a palindrome (245433545334542).

The spelling of 203400421330240 in words is "two hundred three trillion, four hundred billion, four hundred twenty-one million, three hundred thirty thousand, two hundred forty".