30542021200 has 120 divisors (see below), whose sum is σ = 77831313120. Its totient is φ = 11485094400.

The previous prime is 30542021189. The next prime is 30542021201. The reversal of 30542021200 is 212024503.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30542021201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 980262 + ... + 1010938.

It is an arithmetic number, because the mean of its divisors is an integer number (648594276).

Almost surely, 2^30542021200 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 30542021200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38915656560).

30542021200 is an abundant number, since it is smaller than the sum of its proper divisors (47289291920).

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

30542021200 is a wasteful number, since it uses less digits than its factorization.

30542021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30845 (or 30834 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 30542021200 its reverse (212024503), we get a palindrome (30754045703).

The spelling of 30542021200 in words is "thirty billion, five hundred forty-two million, twenty-one thousand, two hundred".