851342147 has 2 divisors, whose sum is σ = 851342148. Its totient is φ = 851342146.

The previous prime is 851342143. The next prime is 851342179. The reversal of 851342147 is 741243158.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 851342147 - 2² = 851342143 is a prime.

It is not a weakly prime, because it can be changed into another prime (851342143) 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, 425671073 + 425671074.

It is an arithmetic number, because the mean of its divisors is an integer number (425671074).

Almost surely, 2^851342147 is an apocalyptic number.

851342147 is a deficient number, since it is larger than the sum of its proper divisors (1).

851342147 is an equidigital number, since it uses as much as digits as its factorization.

851342147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 35.

The square root of 851342147 is about 29177.7680263587. The cubic root of 851342147 is about 947.7665527328.

The spelling of 851342147 in words is "eight hundred fifty-one million, three hundred forty-two thousand, one hundred forty-seven".