421553531441142 has 24 divisors (see below), whose sum is σ = 913366771673616. Its totient is φ = 140517722754576.

The previous prime is 421553531441129. The next prime is 421553531441173. The reversal of 421553531441142 is 241144135355124.

421553531441142 is a `hidden beast` number, since 4 + 2 + 1 + 5 + 5 + 35 + 31 + 441 + 142 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12787303 + ... + 31727309.

It is an arithmetic number, because the mean of its divisors is an integer number (38056948819734).

Almost surely, 2^{421553531441142} is an apocalyptic number.

421553531441142 is an abundant number, since it is smaller than the sum of its proper divisors (491813240232474).

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

421553531441142 is a wasteful number, since it uses less digits than its factorization.

421553531441142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20176532 (or 20176529 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 45.

Adding to 421553531441142 its reverse (241144135355124), we get a palindrome (662697666796266).

The spelling of 421553531441142 in words is "four hundred twenty-one trillion, five hundred fifty-three billion, five hundred thirty-one million, four hundred forty-one thousand, one hundred forty-two".