421281324450320 has 20 divisors (see below), whose sum is σ = 979479079347180. Its totient is φ = 168512529780096.

The previous prime is 421281324450277. The next prime is 421281324450353. The reversal of 421281324450320 is 23054423182124.

It can be written as a sum of positive squares in 2 ways, for example, as 166093223696656 + 255188100753664 = 12887716^2 + 15974608^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2633008277735 + ... + 2633008277894.

It is an arithmetic number, because the mean of its divisors is an integer number (48973953967359).

Almost surely, 2^{421281324450320} is an apocalyptic number.

421281324450320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421281324450320 is an abundant number, since it is smaller than the sum of its proper divisors (558197754896860).

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

421281324450320 is a wasteful number, since it uses less digits than its factorization.

421281324450320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5266016555642 (or 5266016555636 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 41.

The spelling of 421281324450320 in words is "four hundred twenty-one trillion, two hundred eighty-one billion, three hundred twenty-four million, four hundred fifty thousand, three hundred twenty".