72143146 has 8 divisors (see below), whose sum is σ = 108264960. Its totient is φ = 36054828.

The previous prime is 72143131. The next prime is 72143153. The reversal of 72143146 is 64134127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2026 + ... + 12181.

It is an arithmetic number, because the mean of its divisors is an integer number (13533120).

Almost surely, 2^72143146 is an apocalyptic number.

72143146 is a deficient number, since it is larger than the sum of its proper divisors (36121814).

72143146 is a wasteful number, since it uses less digits than its factorization.

72143146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16748.

The product of its digits is 4032, while the sum is 28.

The square root of 72143146 is about 8493.7121448752. The cubic root of 72143146 is about 416.2922818049.

The spelling of 72143146 in words is "seventy-two million, one hundred forty-three thousand, one hundred forty-six".