445342140 has 144 divisors (see below), whose sum is σ = 1431349920. Its totient is φ = 111767040.

The previous prime is 445342133. The next prime is 445342171. The reversal of 445342140 is 41243544.

It is a happy number.

445342140 is a `hidden beast` number, since 445 + 3 + 4 + 214 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 673410 + ... + 674070.

It is an arithmetic number, because the mean of its divisors is an integer number (9939930).

Almost surely, 2^445342140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445342140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (715674960).

445342140 is an abundant number, since it is smaller than the sum of its proper divisors (986007780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445342140 is a wasteful number, since it uses less digits than its factorization.

445342140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 445342140 is about 21103.1310473114. The cubic root of 445342140 is about 763.6562852719.

Adding to 445342140 its reverse (41243544), we get a palindrome (486585684).

The spelling of 445342140 in words is "four hundred forty-five million, three hundred forty-two thousand, one hundred forty".