421443454303 has 32 divisors (see below), whose sum is σ = 462067200000. Its totient is φ = 382861043712.

The previous prime is 421443454249. The next prime is 421443454331. The reversal of 421443454303 is 303454344124.

It is not a de Polignac number, because 421443454303 - 2³⁷ = 284004500831 is a prime.

It is a super-2 number, since 2×421443454303² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421443454403) 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, 55166158 + ... + 55173796.

It is an arithmetic number, because the mean of its divisors is an integer number (14439600000).

Almost surely, 2^421443454303 is an apocalyptic number.

421443454303 is a deficient number, since it is larger than the sum of its proper divisors (40623745697).

421443454303 is a wasteful number, since it uses less digits than its factorization.

421443454303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8359.

The product of its (nonzero) digits is 276480, while the sum is 37.

Adding to 421443454303 its reverse (303454344124), we get a palindrome (724897798427).

The spelling of 421443454303 in words is "four hundred twenty-one billion, four hundred forty-three million, four hundred fifty-four thousand, three hundred three".