123752861 has 2 divisors, whose sum is σ = 123752862. Its totient is φ = 123752860.

The previous prime is 123752851. The next prime is 123752869. The reversal of 123752861 is 168257321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78943225 + 44809636 = 8885^2 + 6694^2 .

It is a cyclic number.

It is not a de Polignac number, because 123752861 - 2²² = 119558557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123752869) 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, 61876430 + 61876431.

It is an arithmetic number, because the mean of its divisors is an integer number (61876431).

Almost surely, 2^123752861 is an apocalyptic number.

It is an amenable number.

123752861 is a deficient number, since it is larger than the sum of its proper divisors (1).

123752861 is an equidigital number, since it uses as much as digits as its factorization.

123752861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 35.

The square root of 123752861 is about 11124.4263222874. The cubic root of 123752861 is about 498.3315869883.

The spelling of 123752861 in words is "one hundred twenty-three million, seven hundred fifty-two thousand, eight hundred sixty-one".