123761489 has 2 divisors, whose sum is σ = 123761490. Its totient is φ = 123761488.

The previous prime is 123761467. The next prime is 123761509. The reversal of 123761489 is 984167321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66259600 + 57501889 = 8140^2 + 7583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123761489 is a prime.

It is not a weakly prime, because it can be changed into another prime (123761089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61880744 + 61880745.

It is an arithmetic number, because the mean of its divisors is an integer number (61880745).

Almost surely, 2^123761489 is an apocalyptic number.

It is an amenable number.

123761489 is a deficient number, since it is larger than the sum of its proper divisors (1).

123761489 is an equidigital number, since it uses as much as digits as its factorization.

123761489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 123761489 is about 11124.8141108065. The cubic root of 123761489 is about 498.3431678789.

It can be divided in two parts, 1237 and 61489, that added together give a palindrome (62726).

The spelling of 123761489 in words is "one hundred twenty-three million, seven hundred sixty-one thousand, four hundred eighty-nine".