86142971 has 2 divisors, whose sum is σ = 86142972. Its totient is φ = 86142970.

The previous prime is 86142937. The next prime is 86142983. The reversal of 86142971 is 17924168.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86142971 is a prime.

It is a super-2 number, since 2×86142971² = 14841222905413682, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86148971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43071485 + 43071486.

It is an arithmetic number, because the mean of its divisors is an integer number (43071486).

Almost surely, 2^86142971 is an apocalyptic number.

86142971 is a deficient number, since it is larger than the sum of its proper divisors (1).

86142971 is an equidigital number, since it uses as much as digits as its factorization.

86142971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 86142971 is about 9281.3237741176. The cubic root of 86142971 is about 441.6449634207.

The spelling of 86142971 in words is "eighty-six million, one hundred forty-two thousand, nine hundred seventy-one".