123344857 has 4 divisors (see below), whose sum is σ = 123367860. Its totient is φ = 123321856.

The previous prime is 123344831. The next prime is 123344863. The reversal of 123344857 is 758443321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 758443321 = 17 ⋅44614313.

It can be written as a sum of positive squares in 2 ways, for example, as 76230361 + 47114496 = 8731^2 + 6864^2 .

It is a cyclic number.

It is not a de Polignac number, because 123344857 - 2⁷ = 123344729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123344807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1269 + ... + 15757.

It is an arithmetic number, because the mean of its divisors is an integer number (30841965).

Almost surely, 2^123344857 is an apocalyptic number.

It is an amenable number.

123344857 is a deficient number, since it is larger than the sum of its proper divisors (23003).

123344857 is an equidigital number, since it uses as much as digits as its factorization.

123344857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23002.

The product of its digits is 80640, while the sum is 37.

The square root of 123344857 is about 11106.0729783304. The cubic root of 123344857 is about 497.7833299368.

The spelling of 123344857 in words is "one hundred twenty-three million, three hundred forty-four thousand, eight hundred fifty-seven".