42241232645 has 4 divisors (see below), whose sum is σ = 50689479180. Its totient is φ = 33792986112.

The previous prime is 42241232633. The next prime is 42241232689. The reversal of 42241232645 is 54623214224.

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 9973217956 + 32268014689 = 99866^2 + 179633^2 .

It is a cyclic number.

It is not a de Polignac number, because 42241232645 - 2⁴ = 42241232629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4224123260 + ... + 4224123269.

It is an arithmetic number, because the mean of its divisors is an integer number (12672369795).

Almost surely, 2^42241232645 is an apocalyptic number.

It is an amenable number.

42241232645 is a deficient number, since it is larger than the sum of its proper divisors (8448246535).

42241232645 is an equidigital number, since it uses as much as digits as its factorization.

42241232645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8448246534.

The product of its digits is 92160, while the sum is 35.

Adding to 42241232645 its reverse (54623214224), we get a palindrome (96864446869).

The spelling of 42241232645 in words is "forty-two billion, two hundred forty-one million, two hundred thirty-two thousand, six hundred forty-five".