1153141220 has 96 divisors (see below), whose sum is σ = 3041418240. Its totient is φ = 356768640.

The previous prime is 1153141207. The next prime is 1153141237. The reversal of 1153141220 is 221413511.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1153141192 and 1153141201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211367 + ... + 216753.

It is an arithmetic number, because the mean of its divisors is an integer number (31681440).

Almost surely, 2^1153141220 is an apocalyptic number.

1153141220 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 1153141220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1520709120).

1153141220 is an abundant number, since it is smaller than the sum of its proper divisors (1888277020).

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

1153141220 is a wasteful number, since it uses less digits than its factorization.

1153141220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553 (or 5551 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1153141220 is about 33957.9330937559. The cubic root of 1153141220 is about 1048.6426057644.

Adding to 1153141220 its reverse (221413511), we get a palindrome (1374554731).

The spelling of 1153141220 in words is "one billion, one hundred fifty-three million, one hundred forty-one thousand, two hundred twenty".