42223851 has 6 divisors (see below), whose sum is σ = 60990020. Its totient is φ = 28149228.

The previous prime is 42223823. The next prime is 42223873. The reversal of 42223851 is 15832224.

42223851 is a `hidden beast` number, since 422 + 238 + 5 + 1 = 666.

It is not a de Polignac number, because 42223851 - 2⁶ = 42223787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42223751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2345761 + ... + 2345778.

Almost surely, 2^42223851 is an apocalyptic number.

42223851 is a deficient number, since it is larger than the sum of its proper divisors (18766169).

42223851 is a wasteful number, since it uses less digits than its factorization.

42223851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4691545 (or 4691542 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 42223851 is about 6497.9882271361. The cubic root of 42223851 is about 348.2191198292.

The spelling of 42223851 in words is "forty-two million, two hundred twenty-three thousand, eight hundred fifty-one".