47142866 has 8 divisors (see below), whose sum is σ = 72439164. Its totient is φ = 22996480.

The previous prime is 47142863. The next prime is 47142877. The reversal of 47142866 is 66824174.

It can be written as a sum of positive squares in 2 ways, for example, as 47128225 + 14641 = 6865^2 + 121^2 .

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

It is not an unprimeable number, because it can be changed into a prime (47142863) 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, 287375 + ... + 287538.

Almost surely, 2^47142866 is an apocalyptic number.

47142866 is a deficient number, since it is larger than the sum of its proper divisors (25296298).

47142866 is a wasteful number, since it uses less digits than its factorization.

47142866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574956.

The product of its digits is 64512, while the sum is 38.

The square root of 47142866 is about 6866.0662682500. The cubic root of 47142866 is about 361.2478966844.

The spelling of 47142866 in words is "forty-seven million, one hundred forty-two thousand, eight hundred sixty-six".