1249443 has 24 divisors (see below), whose sum is σ = 1987440. Its totient is φ = 751680.

The previous prime is 1249433. The next prime is 1249477. The reversal of 1249443 is 3449421.

It is not a de Polignac number, because 1249443 - 2⁴ = 1249427 is a prime.

It is a super-2 number, since 2×1249443² = 3122215620498, which contains 22 as substring.

It is a d-powerful number, because it can be written as 1 + 2¹⁷ + 4⁶ + 9² + 4⁸ + 4¹⁰ + 3⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6813 + ... + 6993.

It is an arithmetic number, because the mean of its divisors is an integer number (82810).

2^1249443 is an apocalyptic number.

1249443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1249443 is a deficient number, since it is larger than the sum of its proper divisors (737997).

1249443 is a wasteful number, since it uses less digits than its factorization.

1249443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 256 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1249443 is about 1117.7848630215. The cubic root of 1249443 is about 107.7057318561.

It can be divided in two parts, 12 and 49443, that added together give a triangular number (49455 = T₃₁₄).

The spelling of 1249443 in words is "one million, two hundred forty-nine thousand, four hundred forty-three".