1100142440 has 32 divisors (see below), whose sum is σ = 2582945280. Its totient is φ = 420923712.

The previous prime is 1100142391. The next prime is 1100142457. The reversal of 1100142440 is 442410011.

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, 596984 + ... + 598823.

It is an arithmetic number, because the mean of its divisors is an integer number (80717040).

Almost surely, 2^1100142440 is an apocalyptic number.

1100142440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100142440 is an abundant number, since it is smaller than the sum of its proper divisors (1482802840).

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

1100142440 is a wasteful number, since it uses less digits than its factorization.

1100142440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195841 (or 1195837 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1100142440 is about 33168.3951978386. The cubic root of 1100142440 is about 1032.3246704968.

Adding to 1100142440 its reverse (442410011), we get a palindrome (1542552451).

The spelling of 1100142440 in words is "one billion, one hundred million, one hundred forty-two thousand, four hundred forty".