203652420420 has 24 divisors (see below), whose sum is σ = 570226777344. Its totient is φ = 54307312096.

The previous prime is 203652420407. The next prime is 203652420421. The reversal of 203652420420 is 24024256302.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (203652420421) 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, 1697103444 + ... + 1697103563.

It is an arithmetic number, because the mean of its divisors is an integer number (23759449056).

Almost surely, 2^203652420420 is an apocalyptic number.

203652420420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203652420420 is an abundant number, since it is smaller than the sum of its proper divisors (366574356924).

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

203652420420 is a wasteful number, since it uses less digits than its factorization.

203652420420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3394207019 (or 3394207017 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 203652420420 its reverse (24024256302), we get a palindrome (227676676722).

The spelling of 203652420420 in words is "two hundred three billion, six hundred fifty-two million, four hundred twenty thousand, four hundred twenty".