1241643 has 24 divisors (see below), whose sum is σ = 1873920. Its totient is φ = 730080.

The previous prime is 1241627. The next prime is 1241651. The reversal of 1241643 is 3461421.

It is not a de Polignac number, because 1241643 - 2⁴ = 1241627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1241243) 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 23 ways as a sum of consecutive naturals, for example, 15678 + ... + 15756.

It is an arithmetic number, because the mean of its divisors is an integer number (78080).

2^1241643 is an apocalyptic number.

1241643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1241643 is a deficient number, since it is larger than the sum of its proper divisors (632277).

1241643 is a wasteful number, since it uses less digits than its factorization.

1241643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 126 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 1241643 is about 1114.2903571332. The cubic root of 1241643 is about 107.4811360446.

The spelling of 1241643 in words is "one million, two hundred forty-one thousand, six hundred forty-three".