1213712 has 20 divisors (see below), whose sum is σ = 2428416. Its totient is φ = 587040.

The previous prime is 1213673. The next prime is 1213721. The reversal of 1213712 is 2173121.

1213712 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 728 + ... + 1719.

2^1213712 is an apocalyptic number.

It is an amenable number.

1213712 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1213712 is a wasteful number, since it uses less digits than its factorization.

1213712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486 (or 2480 counting only the distinct ones).

The product of its digits is 84, while the sum is 17.

The square root of 1213712 is about 1101.6859806678. The cubic root of 1213712 is about 106.6690798065.

Adding to 1213712 its reverse (2173121), we get a palindrome (3386833).

The spelling of 1213712 in words is "one million, two hundred thirteen thousand, seven hundred twelve".