421143127 has 2 divisors, whose sum is σ = 421143128. Its totient is φ = 421143126.

The previous prime is 421143071. The next prime is 421143131. The reversal of 421143127 is 721341124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421143127 - 2¹¹ = 421141079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421143157) 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, 210571563 + 210571564.

It is an arithmetic number, because the mean of its divisors is an integer number (210571564).

Almost surely, 2^421143127 is an apocalyptic number.

421143127 is a deficient number, since it is larger than the sum of its proper divisors (1).

421143127 is an equidigital number, since it uses as much as digits as its factorization.

421143127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 421143127 is about 20521.7720238775. The cubic root of 421143127 is about 749.5660464423.

The spelling of 421143127 in words is "four hundred twenty-one million, one hundred forty-three thousand, one hundred twenty-seven".