71428127 has 2 divisors, whose sum is σ = 71428128. Its totient is φ = 71428126.

The previous prime is 71428121. The next prime is 71428129. The reversal of 71428127 is 72182417.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71428127 is a prime.

It is a super-3 number, since 3×71428127³ (a number of 25 digits) contains 333 as substring.

Together with 71428129, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71428093 and 71428102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71428121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35714063 + 35714064.

It is an arithmetic number, because the mean of its divisors is an integer number (35714064).

Almost surely, 2^71428127 is an apocalyptic number.

71428127 is a deficient number, since it is larger than the sum of its proper divisors (1).

71428127 is an equidigital number, since it uses as much as digits as its factorization.

71428127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6272, while the sum is 32.

The square root of 71428127 is about 8451.5162544954. The cubic root of 71428127 is about 414.9124061512.

The spelling of 71428127 in words is "seventy-one million, four hundred twenty-eight thousand, one hundred twenty-seven".