1153102440 has 128 divisors (see below), whose sum is σ = 3980113920. Its totient is φ = 261792000.

The previous prime is 1153102411. The next prime is 1153102441. The reversal of 1153102440 is 442013511.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1153102441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122295 + ... + 131385.

It is an arithmetic number, because the mean of its divisors is an integer number (31094640).

Almost surely, 2^1153102440 is an apocalyptic number.

1153102440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1153102440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1990056960).

1153102440 is an abundant number, since it is smaller than the sum of its proper divisors (2827011480).

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

1153102440 is a wasteful number, since it uses less digits than its factorization.

1153102440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9263 (or 9259 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1153102440 is about 33957.3620883602. The cubic root of 1153102440 is about 1048.6308503912.

Adding to 1153102440 its reverse (442013511), we get a palindrome (1595115951).

The spelling of 1153102440 in words is "one billion, one hundred fifty-three million, one hundred two thousand, four hundred forty".