1212385 has 8 divisors (see below), whose sum is σ = 1488960. Its totient is φ = 947184.

The previous prime is 1212373. The next prime is 1212397. The reversal of 1212385 is 5832121.

It is an interprime number because it is at equal distance from previous prime (1212373) and next prime (1212397).

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

It is a cyclic number.

It is not a de Polignac number, because 1212385 - 2¹⁹ = 688097 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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, 2605 + ... + 3034.

It is an arithmetic number, because the mean of its divisors is an integer number (186120).

2^1212385 is an apocalyptic number.

It is an amenable number.

1212385 is a deficient number, since it is larger than the sum of its proper divisors (276575).

1212385 is an equidigital number, since it uses as much as digits as its factorization.

1212385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5687.

The product of its digits is 480, while the sum is 22.

The square root of 1212385 is about 1101.0835572290. The cubic root of 1212385 is about 106.6301904358.

The spelling of 1212385 in words is "one million, two hundred twelve thousand, three hundred eighty-five".