1102643 has 8 divisors (see below), whose sum is σ = 1161216. Its totient is φ = 1045000.

The previous prime is 1102583. The next prime is 1102663. The reversal of 1102643 is 3462011.

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

It is a cyclic number.

It is not a de Polignac number, because 1102643 - 2¹⁰ = 1101619 is a prime.

It is a d-powerful number, because it can be written as 1 + 1 + 0 + 2¹⁹ + 6⁶ + 4⁴ + 3¹² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1102663) 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, 4268 + ... + 4518.

It is an arithmetic number, because the mean of its divisors is an integer number (145152).

2^1102643 is an apocalyptic number.

1102643 is a deficient number, since it is larger than the sum of its proper divisors (58573).

1102643 is a wasteful number, since it uses less digits than its factorization.

1102643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1102643 is about 1050.0680930302. The cubic root of 1102643 is about 103.3106216706.

Adding to 1102643 its reverse (3462011), we get a palindrome (4564654).

The spelling of 1102643 in words is "one million, one hundred two thousand, six hundred forty-three".