42344013021 has 8 divisors (see below), whose sum is σ = 56662507104. Its totient is φ = 28127430480.

The previous prime is 42344013007. The next prime is 42344013037. The reversal of 42344013021 is 12031044324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42344013021 - 2¹⁴ = 42343996637 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42344012982 and 42344013000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42344013221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25476915 + ... + 25478576.

It is an arithmetic number, because the mean of its divisors is an integer number (7082813388).

Almost surely, 2^42344013021 is an apocalyptic number.

It is an amenable number.

42344013021 is a deficient number, since it is larger than the sum of its proper divisors (14318494083).

42344013021 is a wasteful number, since it uses less digits than its factorization.

42344013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50955771.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 42344013021 its reverse (12031044324), we get a palindrome (54375057345).

The spelling of 42344013021 in words is "forty-two billion, three hundred forty-four million, thirteen thousand, twenty-one".