445142 has 8 divisors (see below), whose sum is σ = 696816. Its totient is φ = 212872.

The previous prime is 445141. The next prime is 445157. The reversal of 445142 is 241544.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445141) 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 3 ways as a sum of consecutive naturals, for example, 4793 + ... + 4884.

It is an arithmetic number, because the mean of its divisors is an integer number (87102).

2⁴⁴⁵¹⁴² is an apocalyptic number.

445142 is a deficient number, since it is larger than the sum of its proper divisors (251674).

445142 is a wasteful number, since it uses less digits than its factorization.

445142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9702.

The product of its digits is 640, while the sum is 20.

The square root of 445142 is about 667.1896282167. The cubic root of 445142 is about 76.3541870566.

Adding to 445142 its reverse (241544), we get a palindrome (686686).

It can be divided in two parts, 445 and 142, that multiplied together give a triangular number (63190 = T₃₅₅).

The spelling of 445142 in words is "four hundred forty-five thousand, one hundred forty-two".