421353152 has 56 divisors (see below), whose sum is σ = 923251392. Its totient is φ = 189190400.

The previous prime is 421353131. The next prime is 421353181. The reversal of 421353152 is 251353124.

It is a happy number.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54827 + ... + 62037.

It is an arithmetic number, because the mean of its divisors is an integer number (16486632).

Almost surely, 2^421353152 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 421353152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461625696).

421353152 is an abundant number, since it is smaller than the sum of its proper divisors (501898240).

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

421353152 is a wasteful number, since it uses less digits than its factorization.

421353152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7317 (or 7307 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 421353152 is about 20526.8885123878. Note that the first 3 decimals coincide. The cubic root of 421353152 is about 749.6906291445.

The spelling of 421353152 in words is "four hundred twenty-one million, three hundred fifty-three thousand, one hundred fifty-two".