42302322421 has 4 divisors (see below), whose sum is σ = 42302913100. Its totient is φ = 42301731744.

The previous prime is 42302322389. The next prime is 42302322467. The reversal of 42302322421 is 12422320324.

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 6953058225 + 35349264196 = 83385^2 + 188014^2 .

It is a cyclic number.

It is not a de Polignac number, because 42302322421 - 2⁵ = 42302322389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42302323421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170256 + ... + 337033.

It is an arithmetic number, because the mean of its divisors is an integer number (10575728275).

Almost surely, 2^42302322421 is an apocalyptic number.

It is an amenable number.

42302322421 is a deficient number, since it is larger than the sum of its proper divisors (590679).

42302322421 is an equidigital number, since it uses as much as digits as its factorization.

42302322421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590678.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 42302322421 its reverse (12422320324), we get a palindrome (54724642745).

The spelling of 42302322421 in words is "forty-two billion, three hundred two million, three hundred twenty-two thousand, four hundred twenty-one".