71427111 has 16 divisors (see below), whose sum is σ = 110688000. Its totient is φ = 40123008.

The previous prime is 71427107. The next prime is 71427119. The reversal of 71427111 is 11172417.

It is not a de Polignac number, because 71427111 - 2² = 71427107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71427119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27586 + ... + 30063.

It is an arithmetic number, because the mean of its divisors is an integer number (6918000).

Almost surely, 2^71427111 is an apocalyptic number.

71427111 is a deficient number, since it is larger than the sum of its proper divisors (39260889).

71427111 is a wasteful number, since it uses less digits than its factorization.

71427111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57718.

The product of its digits is 392, while the sum is 24.

The square root of 71427111 is about 8451.4561467241. The cubic root of 71427111 is about 414.9104388916.

Adding to 71427111 its reverse (11172417), we get a palindrome (82599528).

The spelling of 71427111 in words is "seventy-one million, four hundred twenty-seven thousand, one hundred eleven".