47439142 has 8 divisors (see below), whose sum is σ = 71204976. Its totient is φ = 23704152.

The previous prime is 47439109. The next prime is 47439167. The reversal of 47439142 is 24193474.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 47439098 and 47439107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3378 + ... + 10309.

It is an arithmetic number, because the mean of its divisors is an integer number (8900622).

Almost surely, 2^47439142 is an apocalyptic number.

47439142 is a deficient number, since it is larger than the sum of its proper divisors (23765834).

47439142 is a wasteful number, since it uses less digits than its factorization.

47439142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15422.

The product of its digits is 24192, while the sum is 34.

The square root of 47439142 is about 6887.6078575947. The cubic root of 47439142 is about 362.0030879950.

The spelling of 47439142 in words is "forty-seven million, four hundred thirty-nine thousand, one hundred forty-two".