421018752 has 256 divisors, whose sum is σ = 1445299200. Its totient is φ = 105369600.

The previous prime is 421018751. The next prime is 421018757. The reversal of 421018752 is 257810124.

It is not an unprimeable number, because it can be changed into a prime (421018751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 857227 + ... + 857717.

It is an arithmetic number, because the mean of its divisors is an integer number (5645700).

Almost surely, 2^421018752 is an apocalyptic number.

421018752 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421018752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722649600).

421018752 is an abundant number, since it is smaller than the sum of its proper divisors (1024280448).

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

421018752 is a wasteful number, since it uses less digits than its factorization.

421018752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 421018752 is about 20518.7414818746. The cubic root of 421018752 is about 749.4922501087.

Adding to 421018752 its reverse (257810124), we get a palindrome (678828876).

The spelling of 421018752 in words is "four hundred twenty-one million, eighteen thousand, seven hundred fifty-two".