420025203450 has 36 divisors (see below), whose sum is σ = 1128467714478. Its totient is φ = 112006720800.

The previous prime is 420025203439. The next prime is 420025203473. The reversal of 420025203450 is 54302520024.

It is a happy number.

420025203450 is a `hidden beast` number, since 4 + 2 + 0 + 0 + 2 + 5 + 203 + 450 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 400920711489 + 19104491961 = 633183^2 + 138219^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 466694221 + ... + 466695120.

Almost surely, 2^420025203450 is an apocalyptic number.

420025203450 is an abundant number, since it is smaller than the sum of its proper divisors (708442511028).

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

420025203450 is a wasteful number, since it uses less digits than its factorization.

420025203450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933389359 (or 933389351 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

Adding to 420025203450 its reverse (54302520024), we get a palindrome (474327723474).

The spelling of 420025203450 in words is "four hundred twenty billion, twenty-five million, two hundred three thousand, four hundred fifty".