445742145 has 24 divisors (see below), whose sum is σ = 793504296. Its totient is φ = 231303168.

The previous prime is 445742117. The next prime is 445742153. The reversal of 445742145 is 541247544.

445742145 is a `hidden beast` number, since 44 + 574 + 2 + 1 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 37015056 + 408727089 = 6084^2 + 20217^2 .

It is not a de Polignac number, because 445742145 - 2⁵ = 445742113 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132192 + ... + 135521.

It is an arithmetic number, because the mean of its divisors is an integer number (33062679).

Almost surely, 2^445742145 is an apocalyptic number.

445742145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

445742145 is a deficient number, since it is larger than the sum of its proper divisors (347762151).

445742145 is a wasteful number, since it uses less digits than its factorization.

445742145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267761 (or 267758 counting only the distinct ones).

The product of its digits is 89600, while the sum is 36.

The square root of 445742145 is about 21112.6063052386. The cubic root of 445742145 is about 763.8848547950.

Adding to 445742145 its reverse (541247544), we get a palindrome (986989689).

The spelling of 445742145 in words is "four hundred forty-five million, seven hundred forty-two thousand, one hundred forty-five".