42219855 has 12 divisors (see below), whose sum is σ = 73181160. Its totient is φ = 22517232.

The previous prime is 42219839. The next prime is 42219887. The reversal of 42219855 is 55891224.

It is not a de Polignac number, because 42219855 - 2⁴ = 42219839 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 469065 + ... + 469154.

It is an arithmetic number, because the mean of its divisors is an integer number (6098430).

Almost surely, 2^42219855 is an apocalyptic number.

42219855 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42219855 is a deficient number, since it is larger than the sum of its proper divisors (30961305).

42219855 is a wasteful number, since it uses less digits than its factorization.

42219855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938230 (or 938227 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 42219855 is about 6497.6807400795. The cubic root of 42219855 is about 348.2081345095.

The spelling of 42219855 in words is "forty-two million, two hundred nineteen thousand, eight hundred fifty-five".