147428173 has 2 divisors, whose sum is σ = 147428174. Its totient is φ = 147428172.

The previous prime is 147428161. The next prime is 147428179. The reversal of 147428173 is 371824741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147428164 + 9 = 12142^2 + 3^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147428173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147428179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73714086 + 73714087.

It is an arithmetic number, because the mean of its divisors is an integer number (73714087).

Almost surely, 2^147428173 is an apocalyptic number.

It is an amenable number.

147428173 is a deficient number, since it is larger than the sum of its proper divisors (1).

147428173 is an equidigital number, since it uses as much as digits as its factorization.

147428173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 37.

The square root of 147428173 is about 12142.0003706144. Note that the first 3 decimals coincide. The cubic root of 147428173 is about 528.2751246850.

The spelling of 147428173 in words is "one hundred forty-seven million, four hundred twenty-eight thousand, one hundred seventy-three".