42021103013 has 4 divisors (see below), whose sum is σ = 44492932620. Its totient is φ = 39549273408.

The previous prime is 42021102913. The next prime is 42021103021. The reversal of 42021103013 is 31030112024.

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 29534828449 + 12486274564 = 171857^2 + 111742^2 .

It is a cyclic number.

It is not a de Polignac number, because 42021103013 - 2¹⁴ = 42021086629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 2471829589 = 42021103013 / (4 + 2 + 0 + 2 + 1 + 1 + 0 + 3 + 0 + 1 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42021102982 and 42021103000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42021105013) by changing a digit.

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, 1235914778 + ... + 1235914811.

It is an arithmetic number, because the mean of its divisors is an integer number (11123233155).

Almost surely, 2^42021103013 is an apocalyptic number.

It is an amenable number.

42021103013 is a deficient number, since it is larger than the sum of its proper divisors (2471829607).

42021103013 is a wasteful number, since it uses less digits than its factorization.

42021103013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471829606.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 42021103013 its reverse (31030112024), we get a palindrome (73051215037).

The spelling of 42021103013 in words is "forty-two billion, twenty-one million, one hundred three thousand, thirteen".