123971867 has 4 divisors (see below), whose sum is σ = 127322496. Its totient is φ = 120621240.

The previous prime is 123971851. The next prime is 123971873. The reversal of 123971867 is 768179321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123971867 - 2⁴ = 123971851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123971807) 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, 1675259 + ... + 1675332.

It is an arithmetic number, because the mean of its divisors is an integer number (31830624).

Almost surely, 2^123971867 is an apocalyptic number.

123971867 is a deficient number, since it is larger than the sum of its proper divisors (3350629).

123971867 is an equidigital number, since it uses as much as digits as its factorization.

123971867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350628.

The product of its digits is 127008, while the sum is 44.

The square root of 123971867 is about 11134.2654450125. The cubic root of 123971867 is about 498.6253803047.

The spelling of 123971867 in words is "one hundred twenty-three million, nine hundred seventy-one thousand, eight hundred sixty-seven".