123726849 has 8 divisors (see below), whose sum is σ = 167673792. Its totient is φ = 81132240.

The previous prime is 123726839. The next prime is 123726851. The reversal of 123726849 is 948627321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123726849 - 2⁵ = 123726817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123726849.

It is not an unprimeable number, because it can be changed into a prime (123726839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337869 + ... + 338234.

It is an arithmetic number, because the mean of its divisors is an integer number (20959224).

Almost surely, 2^123726849 is an apocalyptic number.

It is an amenable number.

123726849 is a deficient number, since it is larger than the sum of its proper divisors (43946943).

123726849 is an equidigital number, since it uses as much as digits as its factorization.

123726849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676167.

The product of its digits is 145152, while the sum is 42.

The square root of 123726849 is about 11123.2571219045. The cubic root of 123726849 is about 498.2966692513.

The spelling of 123726849 in words is "one hundred twenty-three million, seven hundred twenty-six thousand, eight hundred forty-nine".