123794257 has 4 divisors (see below), whose sum is σ = 129176640. Its totient is φ = 118411876.

The previous prime is 123794233. The next prime is 123794309. The reversal of 123794257 is 752497321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123794257 - 2¹⁵ = 123761489 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123794227) 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, 2691157 + ... + 2691202.

It is an arithmetic number, because the mean of its divisors is an integer number (32294160).

Almost surely, 2^123794257 is an apocalyptic number.

It is an amenable number.

123794257 is a deficient number, since it is larger than the sum of its proper divisors (5382383).

123794257 is an equidigital number, since it uses as much as digits as its factorization.

123794257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5382382.

The product of its digits is 105840, while the sum is 40.

The square root of 123794257 is about 11126.2867570452. The cubic root of 123794257 is about 498.3871456625.

The spelling of 123794257 in words is "one hundred twenty-three million, seven hundred ninety-four thousand, two hundred fifty-seven".