421041020149 has 2 divisors, whose sum is σ = 421041020150. Its totient is φ = 421041020148.

The previous prime is 421041020087. The next prime is 421041020207. The reversal of 421041020149 is 941020140124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294639439249 + 126401580900 = 542807^2 + 355530^2 .

It is a cyclic number.

It is not a de Polignac number, because 421041020149 - 2¹⁹ = 421040495861 is a prime.

It is a super-2 number, since 2×421041020149² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421041020849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210520510074 + 210520510075.

It is an arithmetic number, because the mean of its divisors is an integer number (210520510075).

Almost surely, 2^421041020149 is an apocalyptic number.

It is an amenable number.

421041020149 is a deficient number, since it is larger than the sum of its proper divisors (1).

421041020149 is an equidigital number, since it uses as much as digits as its factorization.

421041020149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 421041020149 in words is "four hundred twenty-one billion, forty-one million, twenty thousand, one hundred forty-nine".