421204011255 has 32 divisors (see below), whose sum is σ = 758285721600. Its totient is φ = 221798562336.

The previous prime is 421204011253. The next prime is 421204011257. The reversal of 421204011255 is 552110402124.

It is a happy number.

421204011255 is a `hidden beast` number, since 4 + 2 + 1 + 2 + 0 + 401 + 1 + 255 = 666.

421204011255 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (421204011253) and next prime (421204011257).

It is not a de Polignac number, because 421204011255 - 2¹ = 421204011253 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421204011253) 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, 19736359 + ... + 19757688.

It is an arithmetic number, because the mean of its divisors is an integer number (23696428800).

Almost surely, 2^421204011255 is an apocalyptic number.

421204011255 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

421204011255 is a deficient number, since it is larger than the sum of its proper divisors (337081710345).

421204011255 is a wasteful number, since it uses less digits than its factorization.

421204011255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39494140 (or 39494134 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 421204011255 its reverse (552110402124), we get a palindrome (973314413379).

The spelling of 421204011255 in words is "four hundred twenty-one billion, two hundred four million, eleven thousand, two hundred fifty-five".