1212878 has 8 divisors (see below), whose sum is σ = 1824672. Its totient is φ = 604656.

The previous prime is 1212877. The next prime is 1212889. The reversal of 1212878 is 8782121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1212878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212877) 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, 251 + ... + 1577.

It is an arithmetic number, because the mean of its divisors is an integer number (228084).

2^1212878 is an apocalyptic number.

1212878 is a deficient number, since it is larger than the sum of its proper divisors (611794).

1212878 is a wasteful number, since it uses less digits than its factorization.

1212878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786.

The product of its digits is 1792, while the sum is 29.

The square root of 1212878 is about 1101.3074048602. The cubic root of 1212878 is about 106.6446417199.

Adding to 1212878 its reverse (8782121), we get a palindrome (9994999).

The spelling of 1212878 in words is "one million, two hundred twelve thousand, eight hundred seventy-eight".