1206416123 has 4 divisors (see below), whose sum is σ = 1316090328. Its totient is φ = 1096741920.

The previous prime is 1206416111. The next prime is 1206416149. The reversal of 1206416123 is 3216146021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3216146021 = 11 ⋅292376911.

It is a cyclic number.

It is not a de Polignac number, because 1206416123 - 2⁸ = 1206415867 is a prime.

It is a super-2 number, since 2×1206416123² = 2910879723668702258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1206416092 and 1206416101.

It is not an unprimeable number, because it can be changed into a prime (1206416423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54837086 + ... + 54837107.

It is an arithmetic number, because the mean of its divisors is an integer number (329022582).

Almost surely, 2^1206416123 is an apocalyptic number.

1206416123 is a deficient number, since it is larger than the sum of its proper divisors (109674205).

1206416123 is a wasteful number, since it uses less digits than its factorization.

1206416123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109674204.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1206416123 is about 34733.5014503289. The cubic root of 1206416123 is about 1064.5491337288.

The spelling of 1206416123 in words is "one billion, two hundred six million, four hundred sixteen thousand, one hundred twenty-three".