123053857 has 2 divisors, whose sum is σ = 123053858. Its totient is φ = 123053856.

The previous prime is 123053809. The next prime is 123053893. The reversal of 123053857 is 758350321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120648256 + 2405601 = 10984^2 + 1551^2 .

It is an emirp because it is prime and its reverse (758350321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123053857 - 2¹⁹ = 122529569 is a prime.

It is not a weakly prime, because it can be changed into another prime (123053807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61526928 + 61526929.

It is an arithmetic number, because the mean of its divisors is an integer number (61526929).

Almost surely, 2^123053857 is an apocalyptic number.

It is an amenable number.

123053857 is a deficient number, since it is larger than the sum of its proper divisors (1).

123053857 is an equidigital number, since it uses as much as digits as its factorization.

123053857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 123053857 is about 11092.9643017545. The cubic root of 123053857 is about 497.3915583951.

The spelling of 123053857 in words is "one hundred twenty-three million, fifty-three thousand, eight hundred fifty-seven".