47642117 has 2 divisors, whose sum is σ = 47642118. Its totient is φ = 47642116.

The previous prime is 47642107. The next prime is 47642137. The reversal of 47642117 is 71124674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35628961 + 12013156 = 5969^2 + 3466^2 .

It is a cyclic number.

It is not a de Polignac number, because 47642117 - 2⁶ = 47642053 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47642107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23821058 + 23821059.

It is an arithmetic number, because the mean of its divisors is an integer number (23821059).

Almost surely, 2^47642117 is an apocalyptic number.

It is an amenable number.

47642117 is a deficient number, since it is larger than the sum of its proper divisors (1).

47642117 is an equidigital number, since it uses as much as digits as its factorization.

47642117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 32.

The square root of 47642117 is about 6902.3269264792. The cubic root of 47642117 is about 362.5186469996.

The spelling of 47642117 in words is "forty-seven million, six hundred forty-two thousand, one hundred seventeen".