42221803 has 4 divisors (see below), whose sum is σ = 45469648. Its totient is φ = 38973960.

The previous prime is 42221801. The next prime is 42221831. The reversal of 42221803 is 30812224.

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

It is a cyclic number.

It is not a de Polignac number, because 42221803 - 2¹ = 42221801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42221801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1623903 + ... + 1623928.

It is an arithmetic number, because the mean of its divisors is an integer number (11367412).

Almost surely, 2^42221803 is an apocalyptic number.

42221803 is a deficient number, since it is larger than the sum of its proper divisors (3247845).

42221803 is a wasteful number, since it uses less digits than its factorization.

42221803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3247844.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 42221803 is about 6497.8306379899. The cubic root of 42221803 is about 348.2134898020.

The spelling of 42221803 in words is "forty-two million, two hundred twenty-one thousand, eight hundred three".