1099342240 has 48 divisors (see below), whose sum is σ = 2626412040. Its totient is φ = 434790400.

The previous prime is 1099342217. The next prime is 1099342273. The reversal of 1099342240 is 422439901.

It can be written as a sum of positive squares in 4 ways, for example, as 400480144 + 698862096 = 20012^2 + 26436^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1099342196 and 1099342205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24361 + ... + 52840.

Almost surely, 2^1099342240 is an apocalyptic number.

1099342240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1099342240 is an abundant number, since it is smaller than the sum of its proper divisors (1527069800).

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

1099342240 is an equidigital number, since it uses as much as digits as its factorization.

1099342240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77305 (or 77297 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1099342240 is about 33156.3303156426. The cubic root of 1099342240 is about 1032.0743191075.

The spelling of 1099342240 in words is "one billion, ninety-nine million, three hundred forty-two thousand, two hundred forty".