42402565445 has 4 divisors (see below), whose sum is σ = 50883078540. Its totient is φ = 33922052352.

The previous prime is 42402565417. The next prime is 42402565451. The reversal of 42402565445 is 54456520424.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15846277924 + 26556287521 = 125882^2 + 162961^2 .

It is a cyclic number.

It is not a de Polignac number, because 42402565445 - 2⁸ = 42402565189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4240256540 + ... + 4240256549.

It is an arithmetic number, because the mean of its divisors is an integer number (12720769635).

Almost surely, 2^42402565445 is an apocalyptic number.

It is an amenable number.

42402565445 is a deficient number, since it is larger than the sum of its proper divisors (8480513095).

42402565445 is an equidigital number, since it uses as much as digits as its factorization.

42402565445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8480513094.

The product of its (nonzero) digits is 768000, while the sum is 41.

The spelling of 42402565445 in words is "forty-two billion, four hundred two million, five hundred sixty-five thousand, four hundred forty-five".