1102123240 has 16 divisors (see below), whose sum is σ = 2479777380. Its totient is φ = 440849280.

The previous prime is 1102123199. The next prime is 1102123241. The reversal of 1102123240 is 423212011.

It can be written as a sum of positive squares in 2 ways, for example, as 1027715364 + 74407876 = 32058^2 + 8626^2 .

It is a super-2 number, since 2×1102123240² = 2429351272296195200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1102123241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13776501 + ... + 13776580.

Almost surely, 2^1102123240 is an apocalyptic number.

1102123240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1102123240 is an abundant number, since it is smaller than the sum of its proper divisors (1377654140).

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

1102123240 is a wasteful number, since it uses less digits than its factorization.

1102123240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27553092 (or 27553088 counting only the distinct ones).

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

The square root of 1102123240 is about 33198.2415196950. The cubic root of 1102123240 is about 1032.9438638622.

Adding to 1102123240 its reverse (423212011), we get a palindrome (1525335251).

The spelling of 1102123240 in words is "one billion, one hundred two million, one hundred twenty-three thousand, two hundred forty".