204030420240 has 80 divisors (see below), whose sum is σ = 634317311808. Its totient is φ = 54251294208.

The previous prime is 204030420239. The next prime is 204030420241. The reversal of 204030420240 is 42024030402.

It is an interprime number because it is at equal distance from previous prime (204030420239) and next prime (204030420241).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×204030420240² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204030420241) 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, 1141687 + ... + 1308246.

Almost surely, 2^204030420240 is an apocalyptic number.

204030420240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204030420240 is an abundant number, since it is smaller than the sum of its proper divisors (430286891568).

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

204030420240 is a wasteful number, since it uses less digits than its factorization.

204030420240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450296 (or 2450290 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 204030420240 its reverse (42024030402), we get a palindrome (246054450642).

The spelling of 204030420240 in words is "two hundred four billion, thirty million, four hundred twenty thousand, two hundred forty".