442221141 has 4 divisors (see below), whose sum is σ = 589628192. Its totient is φ = 294814092.

The previous prime is 442221137. The next prime is 442221149. The reversal of 442221141 is 141122244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 442221141 - 2² = 442221137 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442221149) 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, 73703521 + ... + 73703526.

It is an arithmetic number, because the mean of its divisors is an integer number (147407048).

Almost surely, 2^442221141 is an apocalyptic number.

It is an amenable number.

442221141 is a deficient number, since it is larger than the sum of its proper divisors (147407051).

442221141 is a wasteful number, since it uses less digits than its factorization.

442221141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147407050.

The product of its digits is 512, while the sum is 21.

The square root of 442221141 is about 21029.0546863144. The cubic root of 442221141 is about 761.8681769884.

Adding to 442221141 its reverse (141122244), we get a palindrome (583343385).

The spelling of 442221141 in words is "four hundred forty-two million, two hundred twenty-one thousand, one hundred forty-one".