421103342005450 has 96 divisors (see below), whose sum is σ = 893133135820800. Its totient is φ = 146336051174400.

The previous prime is 421103342005441. The next prime is 421103342005469. The reversal of 421103342005450 is 54500243301124.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 891178351 + ... + 891650749.

It is an arithmetic number, because the mean of its divisors is an integer number (9303470164800).

Almost surely, 2^{421103342005450} is an apocalyptic number.

421103342005450 is an abundant number, since it is smaller than the sum of its proper divisors (472029793815350).

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

421103342005450 is a wasteful number, since it uses less digits than its factorization.

421103342005450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553112 (or 553107 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 421103342005450 its reverse (54500243301124), we get a palindrome (475603585306574).

The spelling of 421103342005450 in words is "four hundred twenty-one trillion, one hundred three billion, three hundred forty-two million, five thousand, four hundred fifty".