30420253235200 has 144 divisors (see below), whose sum is σ = 75845194425000. Its totient is φ = 12100119429120.

The previous prime is 30420253235129. The next prime is 30420253235201. The reversal of 30420253235200 is 253235202403.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420253235201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7505176 + ... + 10824424.

Almost surely, 2^{30420253235200} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30420253235200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37922597212500).

30420253235200 is an abundant number, since it is smaller than the sum of its proper divisors (45424941189800).

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

30420253235200 is a wasteful number, since it uses less digits than its factorization.

30420253235200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3319460 (or 3319435 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 31.

Adding to 30420253235200 its reverse (253235202403), we get a palindrome (30673488437603).

The spelling of 30420253235200 in words is "thirty trillion, four hundred twenty billion, two hundred fifty-three million, two hundred thirty-five thousand, two hundred".