300142400021 has 2 divisors, whose sum is σ = 300142400022. Its totient is φ = 300142400020.

The previous prime is 300142399951. The next prime is 300142400039. The reversal of 300142400021 is 120004241003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262005778225 + 38136621796 = 511865^2 + 195286^2 .

It is a cyclic number.

It is not a de Polignac number, because 300142400021 - 2¹⁸ = 300142137877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (300142405021) 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, 150071200010 + 150071200011.

It is an arithmetic number, because the mean of its divisors is an integer number (150071200011).

Almost surely, 2^300142400021 is an apocalyptic number.

It is an amenable number.

300142400021 is a deficient number, since it is larger than the sum of its proper divisors (1).

300142400021 is an equidigital number, since it uses as much as digits as its factorization.

300142400021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 300142400021 its reverse (120004241003), we get a palindrome (420146641024).

The spelling of 300142400021 in words is "three hundred billion, one hundred forty-two million, four hundred thousand, twenty-one".