203421301240 has 32 divisors (see below), whose sum is σ = 457718924880. Its totient is φ = 81364787712.

The previous prime is 203421301151. The next prime is 203421301243. The reversal of 203421301240 is 42103124302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203421301243) 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, 868999 + ... + 1077961.

Almost surely, 2^203421301240 is an apocalyptic number.

203421301240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203421301240 is an abundant number, since it is smaller than the sum of its proper divisors (254297623640).

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

203421301240 is a wasteful number, since it uses less digits than its factorization.

203421301240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233311 (or 233307 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 203421301240 its reverse (42103124302), we get a palindrome (245524425542).

The spelling of 203421301240 in words is "two hundred three billion, four hundred twenty-one million, three hundred one thousand, two hundred forty".