1206123413 has 16 divisors (see below), whose sum is σ = 1325920320. Its totient is φ = 1088054400.

The previous prime is 1206123407. The next prime is 1206123421. The reversal of 1206123413 is 3143216021.

It is a cyclic number.

It is not a de Polignac number, because 1206123413 - 2⁴ = 1206123397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206183413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1020683 + ... + 1021863.

It is an arithmetic number, because the mean of its divisors is an integer number (82870020).

Almost surely, 2^1206123413 is an apocalyptic number.

It is an amenable number.

1206123413 is a deficient number, since it is larger than the sum of its proper divisors (119796907).

1206123413 is a wasteful number, since it uses less digits than its factorization.

1206123413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1206123413 is about 34729.2875394817. The cubic root of 1206123413 is about 1064.4630303864.

Adding to 1206123413 its reverse (3143216021), we get a palindrome (4349339434).

The spelling of 1206123413 in words is "one billion, two hundred six million, one hundred twenty-three thousand, four hundred thirteen".