123342047 has 2 divisors, whose sum is σ = 123342048. Its totient is φ = 123342046.

The previous prime is 123342013. The next prime is 123342073. The reversal of 123342047 is 740243321.

It is an a-pointer prime, because the next prime (123342073) can be obtained adding 123342047 to its sum of digits (26).

It is a strong prime.

It is an emirp because it is prime and its reverse (740243321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123342047 - 2⁶ = 123341983 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 (123342007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61671023 + 61671024.

It is an arithmetic number, because the mean of its divisors is an integer number (61671024).

Almost surely, 2^123342047 is an apocalyptic number.

123342047 is a deficient number, since it is larger than the sum of its proper divisors (1).

123342047 is an equidigital number, since it uses as much as digits as its factorization.

123342047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 123342047 is about 11105.9464702474. The cubic root of 123342047 is about 497.7795497987.

Adding to 123342047 its reverse (740243321), we get a palindrome (863585368).

The spelling of 123342047 in words is "one hundred twenty-three million, three hundred forty-two thousand, forty-seven".