42003000232021 has 2 divisors, whose sum is σ = 42003000232022. Its totient is φ = 42003000232020.

The previous prime is 42003000232009. The next prime is 42003000232031. The reversal of 42003000232021 is 12023200030024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40873645562500 + 1129354669521 = 6393250^2 + 1062711^2 .

It is a cyclic number.

It is not a de Polignac number, because 42003000232021 - 2¹¹ = 42003000229973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42003000232021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42003000232031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21001500116010 + 21001500116011.

It is an arithmetic number, because the mean of its divisors is an integer number (21001500116011).

Almost surely, 2^{42003000232021} is an apocalyptic number.

It is an amenable number.

42003000232021 is a deficient number, since it is larger than the sum of its proper divisors (1).

42003000232021 is an equidigital number, since it uses as much as digits as its factorization.

42003000232021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 42003000232021 its reverse (12023200030024), we get a palindrome (54026200262045).

The spelling of 42003000232021 in words is "forty-two trillion, three billion, two hundred thirty-two thousand, twenty-one".