420450204240 has 120 divisors (see below), whose sum is σ = 1540376686368. Its totient is φ = 101927320320.

The previous prime is 420450204149. The next prime is 420450204253. The reversal of 420450204240 is 42402054024.

420450204240 is a `hidden beast` number, since 4 + 2 + 0 + 450 + 204 + 2 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26535654 + ... + 26551493.

Almost surely, 2^420450204240 is an apocalyptic number.

420450204240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420450204240 is an abundant number, since it is smaller than the sum of its proper divisors (1119926482128).

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

420450204240 is a wasteful number, since it uses less digits than its factorization.

420450204240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53087177 (or 53087168 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

Adding to 420450204240 its reverse (42402054024), we get a palindrome (462852258264).

The spelling of 420450204240 in words is "four hundred twenty billion, four hundred fifty million, two hundred four thousand, two hundred forty".