472123109 has 2 divisors, whose sum is σ = 472123110. Its totient is φ = 472123108.

The previous prime is 472123081. The next prime is 472123111. The reversal of 472123109 is 901321274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 435556900 + 36566209 = 20870^2 + 6047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-472123109 is a prime.

Together with 472123111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (472123199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236061554 + 236061555.

It is an arithmetic number, because the mean of its divisors is an integer number (236061555).

Almost surely, 2^472123109 is an apocalyptic number.

It is an amenable number.

472123109 is a deficient number, since it is larger than the sum of its proper divisors (1).

472123109 is an equidigital number, since it uses as much as digits as its factorization.

472123109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 472123109 is about 21728.3940731937. The cubic root of 472123109 is about 778.6669697896. Note that the first 3 decimals are identical.

The spelling of 472123109 in words is "four hundred seventy-two million, one hundred twenty-three thousand, one hundred nine".