123018047 has 2 divisors, whose sum is σ = 123018048. Its totient is φ = 123018046.

The previous prime is 123018041. The next prime is 123018059. The reversal of 123018047 is 740810321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123018047 - 2¹² = 123013951 is a prime.

It is equal to p_7003619 and since 123018047 and 7003619 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123018041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61509023 + 61509024.

It is an arithmetic number, because the mean of its divisors is an integer number (61509024).

Almost surely, 2^123018047 is an apocalyptic number.

123018047 is a deficient number, since it is larger than the sum of its proper divisors (1).

123018047 is an equidigital number, since it uses as much as digits as its factorization.

123018047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 123018047 is about 11091.3500981621. The cubic root of 123018047 is about 497.3433049441.

Adding to 123018047 its reverse (740810321), we get a palindrome (863828368).

The spelling of 123018047 in words is "one hundred twenty-three million, eighteen thousand, forty-seven".