1212493 has 4 divisors (see below), whose sum is σ = 1242108. Its totient is φ = 1182880.

The previous prime is 1212487. The next prime is 1212517. The reversal of 1212493 is 3942121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 103684 + 1108809 = 322^2 + 1053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14746 + ... + 14827.

It is an arithmetic number, because the mean of its divisors is an integer number (310527).

2^1212493 is an apocalyptic number.

It is an amenable number.

1212493 is a deficient number, since it is larger than the sum of its proper divisors (29615).

1212493 is an equidigital number, since it uses as much as digits as its factorization.

1212493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29614.

The product of its digits is 432, while the sum is 22.

The square root of 1212493 is about 1101.1325987364. The cubic root of 1212493 is about 106.6333565694.

The spelling of 1212493 in words is "one million, two hundred twelve thousand, four hundred ninety-three".