147143861 has 4 divisors (see below), whose sum is σ = 147205152. Its totient is φ = 147082572.

The previous prime is 147143827. The next prime is 147143863. The reversal of 147143861 is 168341741.

It is a happy number.

147143861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 168341741 = 193 ⋅872237.

It is a cyclic number.

It is not a de Polignac number, because 147143861 - 2⁶ = 147143797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147143863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26891 + ... + 31896.

It is an arithmetic number, because the mean of its divisors is an integer number (36801288).

Almost surely, 2^147143861 is an apocalyptic number.

It is an amenable number.

147143861 is a deficient number, since it is larger than the sum of its proper divisors (61291).

147143861 is an equidigital number, since it uses as much as digits as its factorization.

147143861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61290.

The product of its digits is 16128, while the sum is 35.

The square root of 147143861 is about 12130.2869298298. The cubic root of 147143861 is about 527.9353171548.

The spelling of 147143861 in words is "one hundred forty-seven million, one hundred forty-three thousand, eight hundred sixty-one".