1102540345 has 4 divisors (see below), whose sum is σ = 1323048420. Its totient is φ = 882032272.

The previous prime is 1102540301. The next prime is 1102540349. The reversal of 1102540345 is 5430452011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122412096 + 980128249 = 11064^2 + 31307^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102540345 - 2⁷ = 1102540217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1102540349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110254030 + ... + 110254039.

It is an arithmetic number, because the mean of its divisors is an integer number (330762105).

Almost surely, 2^1102540345 is an apocalyptic number.

It is an amenable number.

1102540345 is a deficient number, since it is larger than the sum of its proper divisors (220508075).

1102540345 is an equidigital number, since it uses as much as digits as its factorization.

1102540345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220508074.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1102540345 is about 33204.5229599824. The cubic root of 1102540345 is about 1033.0741553136.

Adding to 1102540345 its reverse (5430452011), we get a palindrome (6532992356).

The spelling of 1102540345 in words is "one billion, one hundred two million, five hundred forty thousand, three hundred forty-five".