1229943 has 32 divisors (see below), whose sum is σ = 1999872. Its totient is φ = 662400.

The previous prime is 1229941. The next prime is 1229957. The reversal of 1229943 is 3499221.

It is not a de Polignac number, because 1229943 - 2¹ = 1229941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1229943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229941) 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 31 ways as a sum of consecutive naturals, for example, 20133 + ... + 20193.

It is an arithmetic number, because the mean of its divisors is an integer number (62496).

2^1229943 is an apocalyptic number.

1229943 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1229943 is a deficient number, since it is larger than the sum of its proper divisors (769929).

1229943 is a wasteful number, since it uses less digits than its factorization.

1229943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135.

The product of its digits is 3888, while the sum is 30.

The square root of 1229943 is about 1109.0279527586. The cubic root of 1229943 is about 107.1424718716.

The spelling of 1229943 in words is "one million, two hundred twenty-nine thousand, nine hundred forty-three".