421029360 has 160 divisors (see below), whose sum is σ = 1526688000. Its totient is φ = 106354944.

The previous prime is 421029347. The next prime is 421029377. The reversal of 421029360 is 63920124.

It is a Cunningham number, because it is equal to 20519²-1.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 35911 + ... + 46169.

It is an arithmetic number, because the mean of its divisors is an integer number (9541800).

Almost surely, 2^421029360 is an apocalyptic number.

421029360 is a gapful number since it is divisible by the number (40) 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 421029360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (763344000).

421029360 is an abundant number, since it is smaller than the sum of its proper divisors (1105658640).

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

421029360 is a wasteful number, since it uses less digits than its factorization.

421029360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10300 (or 10288 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 421029360 is about 20518.9999756323. Note that the first 4 decimals coincide. The cubic root of 421029360 is about 749.4985447983.

Adding to 421029360 its reverse (63920124), we get a palindrome (484949484).

The spelling of 421029360 in words is "four hundred twenty-one million, twenty-nine thousand, three hundred sixty".