12071406 has 16 divisors (see below), whose sum is σ = 24251904. Its totient is φ = 4005624.

The previous prime is 12071401. The next prime is 12071407. The reversal of 12071406 is 60417021.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12071401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3070 + ... + 5793.

It is an arithmetic number, because the mean of its divisors is an integer number (1515744).

Almost surely, 2^12071406 is an apocalyptic number.

12071406 is an abundant number, since it is smaller than the sum of its proper divisors (12180498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12071406 is a wasteful number, since it uses less digits than its factorization.

12071406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9095.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 12071406 is about 3474.3928966080. The cubic root of 12071406 is about 229.3960588931.

Adding to 12071406 its reverse (60417021), we get a palindrome (72488427).

The spelling of 12071406 in words is "twelve million, seventy-one thousand, four hundred six".