472978123 has 2 divisors, whose sum is σ = 472978124. Its totient is φ = 472978122.

The previous prime is 472978109. The next prime is 472978157. The reversal of 472978123 is 321879274.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 472978123 - 2⁹ = 472977611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 472978123.

It is not a weakly prime, because it can be changed into another prime (472978423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236489061 + 236489062.

It is an arithmetic number, because the mean of its divisors is an integer number (236489062).

Almost surely, 2^472978123 is an apocalyptic number.

472978123 is a deficient number, since it is larger than the sum of its proper divisors (1).

472978123 is an equidigital number, since it uses as much as digits as its factorization.

472978123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The square root of 472978123 is about 21748.0602123500. The cubic root of 472978123 is about 779.1367410903.

The spelling of 472978123 in words is "four hundred seventy-two million, nine hundred seventy-eight thousand, one hundred twenty-three".