123489101 has 2 divisors, whose sum is σ = 123489102. Its totient is φ = 123489100.

The previous prime is 123489097. The next prime is 123489109. The reversal of 123489101 is 101984321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122633476 + 855625 = 11074^2 + 925^2 .

It is a cyclic number.

It is not a de Polignac number, because 123489101 - 2² = 123489097 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 (123489109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61744550 + 61744551.

It is an arithmetic number, because the mean of its divisors is an integer number (61744551).

Almost surely, 2^123489101 is an apocalyptic number.

It is an amenable number.

123489101 is a deficient number, since it is larger than the sum of its proper divisors (1).

123489101 is an equidigital number, since it uses as much as digits as its factorization.

123489101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 123489101 is about 11112.5650054342. The cubic root of 123489101 is about 497.9772963741.

The spelling of 123489101 in words is "one hundred twenty-three million, four hundred eighty-nine thousand, one hundred one".