421055045 has 4 divisors (see below), whose sum is σ = 505266060. Its totient is φ = 336844032.

The previous prime is 421055023. The next prime is 421055059. The reversal of 421055045 is 540550124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 220492801 + 200562244 = 14849^2 + 14162^2 .

It is a cyclic number.

It is not a de Polignac number, because 421055045 - 2¹⁰ = 421054021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42105500 + ... + 42105509.

It is an arithmetic number, because the mean of its divisors is an integer number (126316515).

Almost surely, 2^421055045 is an apocalyptic number.

It is an amenable number.

421055045 is a deficient number, since it is larger than the sum of its proper divisors (84211015).

421055045 is an equidigital number, since it uses as much as digits as its factorization.

421055045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84211014.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 421055045 is about 20519.6258494155. The cubic root of 421055045 is about 749.5137856029.

The spelling of 421055045 in words is "four hundred twenty-one million, fifty-five thousand, forty-five".