1220343 has 8 divisors (see below), whose sum is σ = 1640448. Its totient is φ = 806904.

The previous prime is 1220333. The next prime is 1220347. The reversal of 1220343 is 3430221.

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

It is not a de Polignac number, because 1220343 - 2⁴ = 1220327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1221 + ... + 1982.

It is an arithmetic number, because the mean of its divisors is an integer number (205056).

2^1220343 is an apocalyptic number.

1220343 is a deficient number, since it is larger than the sum of its proper divisors (420105).

1220343 is a wasteful number, since it uses less digits than its factorization.

1220343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1220343 is about 1104.6913596114. The cubic root of 1220343 is about 106.8629858935.

Adding to 1220343 its reverse (3430221), we get a palindrome (4650564).

It can be divided in two parts, 12203 and 43, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 1220343 in words is "one million, two hundred twenty thousand, three hundred forty-three".