203142421140 has 48 divisors (see below), whose sum is σ = 593529164928. Its totient is φ = 51816037504.

The previous prime is 203142421127. The next prime is 203142421147. The reversal of 203142421140 is 41124241302.

It is a super-2 number, since 2×203142421140² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 203142421140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203142421147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73600947 + ... + 73603706.

It is an arithmetic number, because the mean of its divisors is an integer number (12365190936).

Almost surely, 2^203142421140 is an apocalyptic number.

203142421140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203142421140 is an abundant number, since it is smaller than the sum of its proper divisors (390386743788).

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

203142421140 is a wasteful number, since it uses less digits than its factorization.

203142421140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147204688 (or 147204686 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 203142421140 its reverse (41124241302), we get a palindrome (244266662442).

The spelling of 203142421140 in words is "two hundred three billion, one hundred forty-two million, four hundred twenty-one thousand, one hundred forty".