123005537 has 2 divisors, whose sum is σ = 123005538. Its totient is φ = 123005536.

The previous prime is 123005521. The next prime is 123005567. The reversal of 123005537 is 735500321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80442961 + 42562576 = 8969^2 + 6524^2 .

It is a cyclic number.

It is not a de Polignac number, because 123005537 - 2⁴ = 123005521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123005567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61502768 + 61502769.

It is an arithmetic number, because the mean of its divisors is an integer number (61502769).

Almost surely, 2^123005537 is an apocalyptic number.

It is an amenable number.

123005537 is a deficient number, since it is larger than the sum of its proper divisors (1).

123005537 is an equidigital number, since it uses as much as digits as its factorization.

123005537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 123005537 is about 11090.7861308385. The cubic root of 123005537 is about 497.3264456951.

Adding to 123005537 its reverse (735500321), we get a palindrome (858505858).

The spelling of 123005537 in words is "one hundred twenty-three million, five thousand, five hundred thirty-seven".