1100642144 has 24 divisors (see below), whose sum is σ = 2476445328. Its totient is φ = 471703680.

The previous prime is 1100642119. The next prime is 1100642159. The reversal of 1100642144 is 4412460011.

It is a happy number.

It is a super-2 number, since 2×1100642144² = 2422826258297833472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2456567 + ... + 2457014.

It is an arithmetic number, because the mean of its divisors is an integer number (103185222).

Almost surely, 2^1100642144 is an apocalyptic number.

1100642144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1100642144 is an abundant number, since it is smaller than the sum of its proper divisors (1375803184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1100642144 is an equidigital number, since it uses as much as digits as its factorization.

1100642144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4913598 (or 4913590 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1100642144 is about 33175.9271761921. The cubic root of 1100642144 is about 1032.4809468311.

The spelling of 1100642144 in words is "one billion, one hundred million, six hundred forty-two thousand, one hundred forty-four".