1102642 has 4 divisors (see below), whose sum is σ = 1653966. Its totient is φ = 551320.

The previous prime is 1102583. The next prime is 1102663. The reversal of 1102642 is 2462011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2462011 = 59 ⋅41729.

It can be written as a sum of positive squares in only one way, i.e., 641601 + 461041 = 801^2 + 679^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275659 + ... + 275662.

2^1102642 is an apocalyptic number.

1102642 is a deficient number, since it is larger than the sum of its proper divisors (551324).

1102642 is an equidigital number, since it uses as much as digits as its factorization.

1102642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551323.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1102642 is about 1050.0676168705. The cubic root of 1102642 is about 103.3105904394.

Adding to 1102642 its reverse (2462011), we get a palindrome (3564653).

The spelling of 1102642 in words is "one million, one hundred two thousand, six hundred forty-two".