421529055 has 16 divisors (see below), whose sum is σ = 681126624. Its totient is φ = 222588800.

The previous prime is 421529047. The next prime is 421529057. The reversal of 421529055 is 550925124.

It is not a de Polignac number, because 421529055 - 2³ = 421529047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421529057) by changing a digit.

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, 137604 + ... + 140633.

It is an arithmetic number, because the mean of its divisors is an integer number (42570414).

Almost surely, 2^421529055 is an apocalyptic number.

421529055 is a deficient number, since it is larger than the sum of its proper divisors (259597569).

421529055 is a wasteful number, since it uses less digits than its factorization.

421529055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278346.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 421529055 is about 20531.1727624118. The cubic root of 421529055 is about 749.7949394943.

The spelling of 421529055 in words is "four hundred twenty-one million, five hundred twenty-nine thousand, fifty-five".