1212406 has 24 divisors (see below), whose sum is σ = 2094984. Its totient is φ = 524160.

The previous prime is 1212401. The next prime is 1212427. The reversal of 1212406 is 6042121.

It is a zygodrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 1212406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5641 + ... + 5851.

It is an arithmetic number, because the mean of its divisors is an integer number (87291).

2^1212406 is an apocalyptic number.

1212406 is a deficient number, since it is larger than the sum of its proper divisors (882578).

1212406 is a wasteful number, since it uses less digits than its factorization.

1212406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1212406 is about 1101.0930932487. The cubic root of 1212406 is about 106.6308060876.

Adding to 1212406 its reverse (6042121), we get a palindrome (7254527).

The spelling of 1212406 in words is "one million, two hundred twelve thousand, four hundred six".