123042653 has 2 divisors, whose sum is σ = 123042654. Its totient is φ = 123042652.

The previous prime is 123042643. The next prime is 123042659. The reversal of 123042653 is 356240321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122832889 + 209764 = 11083^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 123042653 - 2⁸ = 123042397 is a prime.

It is a Chen prime.

It is equal to p_7004924 and since 123042653 and 7004924 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 (123042659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61521326 + 61521327.

It is an arithmetic number, because the mean of its divisors is an integer number (61521327).

Almost surely, 2^123042653 is an apocalyptic number.

It is an amenable number.

123042653 is a deficient number, since it is larger than the sum of its proper divisors (1).

123042653 is an equidigital number, since it uses as much as digits as its factorization.

123042653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 123042653 is about 11092.4592854786. The cubic root of 123042653 is about 497.3764621755.

Adding to 123042653 its reverse (356240321), we get a palindrome (479282974).

The spelling of 123042653 in words is "one hundred twenty-three million, forty-two thousand, six hundred fifty-three".