123406159 has 8 divisors (see below), whose sum is σ = 130701440. Its totient is φ = 116190936.

The previous prime is 123406147. The next prime is 123406169. The reversal of 123406159 is 951604321.

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

It is a cyclic number.

It is not a de Polignac number, because 123406159 - 2⁹ = 123405647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123406159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123406139) 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, 16827 + ... + 23020.

It is an arithmetic number, because the mean of its divisors is an integer number (16337680).

Almost surely, 2^123406159 is an apocalyptic number.

123406159 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

123406159 is a deficient number, since it is larger than the sum of its proper divisors (7295281).

123406159 is a wasteful number, since it uses less digits than its factorization.

123406159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40029.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 123406159 is about 11108.8324769077. The cubic root of 123406159 is about 497.8657818540.

The spelling of 123406159 in words is "one hundred twenty-three million, four hundred six thousand, one hundred fifty-nine".