123033041557 has 2 divisors, whose sum is σ = 123033041558. Its totient is φ = 123033041556.

The previous prime is 123033041533. The next prime is 123033041569. The reversal of 123033041557 is 755140330321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88238108401 + 34794933156 = 297049^2 + 186534^2 .

It is a cyclic number.

It is not a de Polignac number, because 123033041557 - 2⁷ = 123033041429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123033041057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61516520778 + 61516520779.

It is an arithmetic number, because the mean of its divisors is an integer number (61516520779).

Almost surely, 2^123033041557 is an apocalyptic number.

It is an amenable number.

123033041557 is a deficient number, since it is larger than the sum of its proper divisors (1).

123033041557 is an equidigital number, since it uses as much as digits as its factorization.

123033041557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 34.

Adding to 123033041557 its reverse (755140330321), we get a palindrome (878173371878).

The spelling of 123033041557 in words is "one hundred twenty-three billion, thirty-three million, forty-one thousand, five hundred fifty-seven".