1100642 has 16 divisors (see below), whose sum is σ = 1752192. Its totient is φ = 517440.

The previous prime is 1100641. The next prime is 1100653. The reversal of 1100642 is 2460011.

1100642 = T₁₄₃ + T₁₄₄ + ... + T₂₁₁.

It is a super-2 number, since 2×1100642² = 2422825624328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100641) 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, 3098 + ... + 3434.

It is an arithmetic number, because the mean of its divisors is an integer number (109512).

2^1100642 is an apocalyptic number.

1100642 is a deficient number, since it is larger than the sum of its proper divisors (651550).

1100642 is a wasteful number, since it uses less digits than its factorization.

1100642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1100642 is about 1049.1148650172. The cubic root of 1100642 is about 103.2480901804.

Adding to 1100642 its reverse (2460011), we get a palindrome (3560653).

The spelling of 1100642 in words is "one million, one hundred thousand, six hundred forty-two".