427140871 has 2 divisors, whose sum is σ = 427140872. Its totient is φ = 427140870.

The previous prime is 427140869. The next prime is 427140877. The reversal of 427140871 is 178041724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427140871 - 2¹ = 427140869 is a prime.

Together with 427140869, 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 (427140877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213570435 + 213570436.

It is an arithmetic number, because the mean of its divisors is an integer number (213570436).

Almost surely, 2^427140871 is an apocalyptic number.

427140871 is a deficient number, since it is larger than the sum of its proper divisors (1).

427140871 is an equidigital number, since it uses as much as digits as its factorization.

427140871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 427140871 is about 20667.3866514371. The cubic root of 427140871 is about 753.1076219448.

The spelling of 427140871 in words is "four hundred twenty-seven million, one hundred forty thousand, eight hundred seventy-one".