421844055 has 16 divisors (see below), whose sum is σ = 676740480. Its totient is φ = 224386848.

The previous prime is 421844053. The next prime is 421844057. The reversal of 421844055 is 550448124.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (421844053) and next prime (421844057).

It is not a de Polignac number, because 421844055 - 2¹ = 421844053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421844053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31417 + ... + 42786.

It is an arithmetic number, because the mean of its divisors is an integer number (42296280).

Almost surely, 2^421844055 is an apocalyptic number.

421844055 is a deficient number, since it is larger than the sum of its proper divisors (254896425).

421844055 is a wasteful number, since it uses less digits than its factorization.

421844055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74590.

The product of its (nonzero) digits is 25600, while the sum is 33.

The square root of 421844055 is about 20538.8425915386. The cubic root of 421844055 is about 749.9816617738.

The spelling of 421844055 in words is "four hundred twenty-one million, eight hundred forty-four thousand, fifty-five".