1214381 has 4 divisors (see below), whose sum is σ = 1387872. Its totient is φ = 1040892.

The previous prime is 1214371. The next prime is 1214393. The reversal of 1214381 is 1834121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1834121 = 103 ⋅17807.

It is a cyclic number.

It is not a de Polignac number, because 1214381 - 2¹⁰ = 1213357 is a prime.

It is a super-2 number, since 2×1214381² = 2949442426322, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86735 + ... + 86748.

It is an arithmetic number, because the mean of its divisors is an integer number (346968).

2^1214381 is an apocalyptic number.

It is an amenable number.

1214381 is a deficient number, since it is larger than the sum of its proper divisors (173491).

1214381 is an equidigital number, since it uses as much as digits as its factorization.

1214381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173490.

The product of its digits is 192, while the sum is 20.

The square root of 1214381 is about 1101.9895643789. The cubic root of 1214381 is about 106.6886749293.

The spelling of 1214381 in words is "one million, two hundred fourteen thousand, three hundred eighty-one".