445780742 has 32 divisors (see below), whose sum is σ = 757050624. Its totient is φ = 195098400.

The previous prime is 445780739. The next prime is 445780757. The reversal of 445780742 is 247087544.

It is a happy number.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 445780742.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 63848 + ... + 70484.

It is an arithmetic number, because the mean of its divisors is an integer number (23657832).

Almost surely, 2^445780742 is an apocalyptic number.

445780742 is a deficient number, since it is larger than the sum of its proper divisors (311269882).

445780742 is a wasteful number, since it uses less digits than its factorization.

445780742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6764.

The product of its (nonzero) digits is 250880, while the sum is 41.

The square root of 445780742 is about 21113.5203601863. The cubic root of 445780742 is about 763.9069025290.

It can be divided in two parts, 445 and 780742, that added together give a palindrome (781187).

The spelling of 445780742 in words is "four hundred forty-five million, seven hundred eighty thousand, seven hundred forty-two".