134446020421 has 2 divisors, whose sum is σ = 134446020422. Its totient is φ = 134446020420.

The previous prime is 134446020419. The next prime is 134446020439. The reversal of 134446020421 is 124020644431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115906202500 + 18539817921 = 340450^2 + 136161^2 .

It is a cyclic number.

It is not a de Polignac number, because 134446020421 - 2¹ = 134446020419 is a prime.

Together with 134446020419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134446020721) 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 as a sum of consecutive naturals, namely, 67223010210 + 67223010211.

It is an arithmetic number, because the mean of its divisors is an integer number (67223010211).

Almost surely, 2^134446020421 is an apocalyptic number.

It is an amenable number.

134446020421 is a deficient number, since it is larger than the sum of its proper divisors (1).

134446020421 is an equidigital number, since it uses as much as digits as its factorization.

134446020421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 134446020421 its reverse (124020644431), we get a palindrome (258466664852).

The spelling of 134446020421 in words is "one hundred thirty-four billion, four hundred forty-six million, twenty thousand, four hundred twenty-one".