445124223030442 has 4 divisors (see below), whose sum is σ = 667686334545666. Its totient is φ = 222562111515220.

The previous prime is 445124223030337. The next prime is 445124223030467. The reversal of 445124223030442 is 244030322421544.

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

It can be written as a sum of positive squares in only one way, i.e., 441232752702681 + 3891470327761 = 21005541^2 + 1972681^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 445124223030395 and 445124223030404.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111281055757609 + ... + 111281055757612.

Almost surely, 2^{445124223030442} is an apocalyptic number.

445124223030442 is a deficient number, since it is larger than the sum of its proper divisors (222562111515224).

445124223030442 is a wasteful number, since it uses less digits than its factorization.

445124223030442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222562111515223.

The product of its (nonzero) digits is 737280, while the sum is 40.

Adding to 445124223030442 its reverse (244030322421544), we get a palindrome (689154545451986).

The spelling of 445124223030442 in words is "four hundred forty-five trillion, one hundred twenty-four billion, two hundred twenty-three million, thirty thousand, four hundred forty-two".