143172147 has 16 divisors (see below), whose sum is σ = 202793760. Its totient is φ = 89536512.

The previous prime is 143172143. The next prime is 143172179. The reversal of 143172147 is 741271341.

It is not a de Polignac number, because 143172147 - 2² = 143172143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143172143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11479 + ... + 20447.

It is an arithmetic number, because the mean of its divisors is an integer number (12674610).

Almost surely, 2^143172147 is an apocalyptic number.

143172147 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

143172147 is a deficient number, since it is larger than the sum of its proper divisors (59621613).

143172147 is a wasteful number, since it uses less digits than its factorization.

143172147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9302.

The product of its digits is 4704, while the sum is 30.

The square root of 143172147 is about 11965.4564058376. The cubic root of 143172147 is about 523.1419086587.

The spelling of 143172147 in words is "one hundred forty-three million, one hundred seventy-two thousand, one hundred forty-seven".