147442187 has 2 divisors, whose sum is σ = 147442188. Its totient is φ = 147442186.

The previous prime is 147442159. The next prime is 147442189. The reversal of 147442187 is 781244741.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 147442187 - 2¹⁰ = 147441163 is a prime.

Together with 147442189, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 147442187.

It is not a weakly prime, because it can be changed into another prime (147442189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73721093 + 73721094.

It is an arithmetic number, because the mean of its divisors is an integer number (73721094).

Almost surely, 2^147442187 is an apocalyptic number.

147442187 is a deficient number, since it is larger than the sum of its proper divisors (1).

147442187 is an equidigital number, since it uses as much as digits as its factorization.

147442187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50176, while the sum is 38.

The square root of 147442187 is about 12142.5774446779. The cubic root of 147442187 is about 528.2918628088.

The spelling of 147442187 in words is "one hundred forty-seven million, four hundred forty-two thousand, one hundred eighty-seven".