443420141 has 4 divisors (see below), whose sum is σ = 443671452. Its totient is φ = 443168832.

The previous prime is 443420123. The next prime is 443420143. The reversal of 443420141 is 141024344.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 173475241 + 269944900 = 13171^2 + 16430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-443420141 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 (443420143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122990 + ... + 126543.

It is an arithmetic number, because the mean of its divisors is an integer number (110917863).

Almost surely, 2^443420141 is an apocalyptic number.

It is an amenable number.

443420141 is a deficient number, since it is larger than the sum of its proper divisors (251311).

443420141 is a wasteful number, since it uses less digits than its factorization.

443420141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251310.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 443420141 is about 21057.5435651930. The cubic root of 443420141 is about 762.5561100338.

Adding to 443420141 its reverse (141024344), we get a palindrome (584444485).

The spelling of 443420141 in words is "four hundred forty-three million, four hundred twenty thousand, one hundred forty-one".