42844455 has 24 divisors (see below), whose sum is σ = 76826880. Its totient is φ = 22061760.

The previous prime is 42844441. The next prime is 42844463. The reversal of 42844455 is 55444824.

It is not a de Polignac number, because 42844455 - 2⁶ = 42844391 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15111 + ... + 17720.

It is an arithmetic number, because the mean of its divisors is an integer number (3201120).

Almost surely, 2^42844455 is an apocalyptic number.

42844455 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42844455 is a deficient number, since it is larger than the sum of its proper divisors (33982425).

42844455 is a wasteful number, since it uses less digits than its factorization.

42844455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32871 (or 32868 counting only the distinct ones).

The product of its digits is 102400, while the sum is 36.

The square root of 42844455 is about 6545.5675842512. The cubic root of 42844455 is about 349.9168646082.

The spelling of 42844455 in words is "forty-two million, eight hundred forty-four thousand, four hundred fifty-five".