123738877 has 2 divisors, whose sum is σ = 123738878. Its totient is φ = 123738876.

The previous prime is 123738863. The next prime is 123738917. The reversal of 123738877 is 778837321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123343236 + 395641 = 11106^2 + 629^2 .

It is an emirp because it is prime and its reverse (778837321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123738877 - 2²³ = 115350269 is a prime.

It is a super-2 number, since 2×123738877² = 30622619362442258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123738847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61869438 + 61869439.

It is an arithmetic number, because the mean of its divisors is an integer number (61869439).

Almost surely, 2^123738877 is an apocalyptic number.

It is an amenable number.

123738877 is a deficient number, since it is larger than the sum of its proper divisors (1).

123738877 is an equidigital number, since it uses as much as digits as its factorization.

123738877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 46.

The square root of 123738877 is about 11123.7977777376. The cubic root of 123738877 is about 498.3128158899.

The spelling of 123738877 in words is "one hundred twenty-three million, seven hundred thirty-eight thousand, eight hundred seventy-seven".