42021102803 has 2 divisors, whose sum is σ = 42021102804. Its totient is φ = 42021102802.

The previous prime is 42021102763. The next prime is 42021102811. The reversal of 42021102803 is 30820112024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42021102803 - 2²⁰ = 42020054227 is a prime.

It is not a weakly prime, because it can be changed into another prime (42021102853) 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 as a sum of consecutive naturals, namely, 21010551401 + 21010551402.

It is an arithmetic number, because the mean of its divisors is an integer number (21010551402).

Almost surely, 2^42021102803 is an apocalyptic number.

42021102803 is a deficient number, since it is larger than the sum of its proper divisors (1).

42021102803 is an equidigital number, since it uses as much as digits as its factorization.

42021102803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 42021102803 its reverse (30820112024), we get a palindrome (72841214827).

The spelling of 42021102803 in words is "forty-two billion, twenty-one million, one hundred two thousand, eight hundred three".