421043455 has 16 divisors (see below), whose sum is σ = 581313600. Its totient is φ = 286774272.

The previous prime is 421043449. The next prime is 421043527. The reversal of 421043455 is 554340124.

It is a cyclic number.

It is not a de Polignac number, because 421043455 - 2⁷ = 421043327 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35154 + ... + 45583.

It is an arithmetic number, because the mean of its divisors is an integer number (36332100).

Almost surely, 2^421043455 is an apocalyptic number.

421043455 is a deficient number, since it is larger than the sum of its proper divisors (160270145).

421043455 is a wasteful number, since it uses less digits than its factorization.

421043455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80898.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 421043455 is about 20519.3434349153. The cubic root of 421043455 is about 749.5069084780.

Adding to 421043455 its reverse (554340124), we get a palindrome (975383579).

The spelling of 421043455 in words is "four hundred twenty-one million, forty-three thousand, four hundred fifty-five".