421030055 has 16 divisors (see below), whose sum is σ = 513565920. Its totient is φ = 331296768.

The previous prime is 421030009. The next prime is 421030061. The reversal of 421030055 is 550030124.

It is a cyclic number.

It is not a de Polignac number, because 421030055 - 2²⁸ = 152594599 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 (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151559 + ... + 154311.

It is an arithmetic number, because the mean of its divisors is an integer number (32097870).

Almost surely, 2^421030055 is an apocalyptic number.

421030055 is a deficient number, since it is larger than the sum of its proper divisors (92535865).

421030055 is a wasteful number, since it uses less digits than its factorization.

421030055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 421030055 is about 20519.0169111485. The cubic root of 421030055 is about 749.4989572012.

Adding to 421030055 its reverse (550030124), we get a palindrome (971060179).

The spelling of 421030055 in words is "four hundred twenty-one million, thirty thousand, fifty-five".