47972123 has 2 divisors, whose sum is σ = 47972124. Its totient is φ = 47972122.

The previous prime is 47972087. The next prime is 47972129. The reversal of 47972123 is 32127974.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47972123 - 2¹⁶ = 47906587 is a prime.

It is not a weakly prime, because it can be changed into another prime (47972129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23986061 + 23986062.

It is an arithmetic number, because the mean of its divisors is an integer number (23986062).

Almost surely, 2^47972123 is an apocalyptic number.

47972123 is a deficient number, since it is larger than the sum of its proper divisors (1).

47972123 is an equidigital number, since it uses as much as digits as its factorization.

47972123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 47972123 is about 6926.1910889030. The cubic root of 47972123 is about 363.3537495659.

The spelling of 47972123 in words is "forty-seven million, nine hundred seventy-two thousand, one hundred twenty-three".