147123871 has 4 divisors (see below), whose sum is σ = 147974472. Its totient is φ = 146273272.

The previous prime is 147123869. The next prime is 147123913. The reversal of 147123871 is 178321741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178321741 = 13 ⋅13717057.

It is a cyclic number.

It is not a de Polignac number, because 147123871 - 2¹ = 147123869 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 (147123811) 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, 425041 + ... + 425386.

It is an arithmetic number, because the mean of its divisors is an integer number (36993618).

Almost surely, 2^147123871 is an apocalyptic number.

147123871 is a deficient number, since it is larger than the sum of its proper divisors (850601).

147123871 is an equidigital number, since it uses as much as digits as its factorization.

147123871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850600.

The product of its digits is 9408, while the sum is 34.

The square root of 147123871 is about 12129.4629312266. The cubic root of 147123871 is about 527.9114087954.

The spelling of 147123871 in words is "one hundred forty-seven million, one hundred twenty-three thousand, eight hundred seventy-one".