47142109 has 8 divisors (see below), whose sum is σ = 54008640. Its totient is φ = 40308576.

The previous prime is 47142079. The next prime is 47142113. The reversal of 47142109 is 90124174.

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

It is not a de Polignac number, because 47142109 - 2⁵ = 47142077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47142149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5104 + ... + 10969.

It is an arithmetic number, because the mean of its divisors is an integer number (6751080).

Almost surely, 2^47142109 is an apocalyptic number.

It is an amenable number.

47142109 is a deficient number, since it is larger than the sum of its proper divisors (6866531).

47142109 is a wasteful number, since it uses less digits than its factorization.

47142109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16499.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 47142109 is about 6866.0111418494. The cubic root of 47142109 is about 361.2459630859.

The spelling of 47142109 in words is "forty-seven million, one hundred forty-two thousand, one hundred nine".