421330254453 has 16 divisors (see below), whose sum is σ = 637473672960. Its totient is φ = 274910519808.

The previous prime is 421330254451. The next prime is 421330254497. The reversal of 421330254453 is 354452033124.

421330254453 is a `hidden beast` number, since 4 + 21 + 330 + 254 + 4 + 53 = 666.

It is not a de Polignac number, because 421330254453 - 2¹ = 421330254451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421330254451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166007500 + ... + 166010037.

It is an arithmetic number, because the mean of its divisors is an integer number (39842104560).

Almost surely, 2^421330254453 is an apocalyptic number.

It is an amenable number.

421330254453 is a deficient number, since it is larger than the sum of its proper divisors (216143418507).

421330254453 is a wasteful number, since it uses less digits than its factorization.

421330254453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332017593 (or 332017587 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 421330254453 its reverse (354452033124), we get a palindrome (775782287577).

The spelling of 421330254453 in words is "four hundred twenty-one billion, three hundred thirty million, two hundred fifty-four thousand, four hundred fifty-three".