63421120 has 112 divisors (see below), whose sum is σ = 180246528. Its totient is φ = 20782080.

The previous prime is 63421103. The next prime is 63421123. The reversal of 63421120 is 2112436.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (63421123) 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, 50905 + ... + 52135.

It is an arithmetic number, because the mean of its divisors is an integer number (1609344).

Almost surely, 2^63421120 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 63421120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90123264).

63421120 is an abundant number, since it is smaller than the sum of its proper divisors (116825408).

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

63421120 is a wasteful number, since it uses less digits than its factorization.

63421120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278 (or 1268 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 63421120 is about 7963.7378158752. The cubic root of 63421120 is about 398.7903455277.

Adding to 63421120 its reverse (2112436), we get a palindrome (65533556).

The spelling of 63421120 in words is "sixty-three million, four hundred twenty-one thousand, one hundred twenty".