123036289 has 2 divisors, whose sum is σ = 123036290. Its totient is φ = 123036288.

The previous prime is 123036283. The next prime is 123036307. The reversal of 123036289 is 982630321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120450625 + 2585664 = 10975^2 + 1608^2 .

It is a cyclic number.

It is not a de Polignac number, because 123036289 - 2¹⁷ = 122905217 is a prime.

It is not a weakly prime, because it can be changed into another prime (123036283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61518144 + 61518145.

It is an arithmetic number, because the mean of its divisors is an integer number (61518145).

Almost surely, 2^123036289 is an apocalyptic number.

It is an amenable number.

123036289 is a deficient number, since it is larger than the sum of its proper divisors (1).

123036289 is an equidigital number, since it uses as much as digits as its factorization.

123036289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 123036289 is about 11092.1724202250. The cubic root of 123036289 is about 497.3678869421.

The spelling of 123036289 in words is "one hundred twenty-three million, thirty-six thousand, two hundred eighty-nine".