47478143 has 8 divisors (see below), whose sum is σ = 49743360. Its totient is φ = 45258840.

The previous prime is 47478121. The next prime is 47478157. The reversal of 47478143 is 34187474.

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

It is a cyclic number.

It is not a de Polignac number, because 47478143 - 2⁸ = 47477887 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47478097 and 47478106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47478103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9353 + ... + 13506.

It is an arithmetic number, because the mean of its divisors is an integer number (6217920).

Almost surely, 2^47478143 is an apocalyptic number.

47478143 is a deficient number, since it is larger than the sum of its proper divisors (2265217).

47478143 is a wasteful number, since it uses less digits than its factorization.

47478143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22957.

The product of its digits is 75264, while the sum is 38.

The square root of 47478143 is about 6890.4385201524. The cubic root of 47478143 is about 362.1022649934.

The spelling of 47478143 in words is "forty-seven million, four hundred seventy-eight thousand, one hundred forty-three".