1153542140 has 24 divisors (see below), whose sum is σ = 2564935632. Its totient is φ = 434274560.

The previous prime is 1153542133. The next prime is 1153542151. The reversal of 1153542140 is 412453511.

It is a congruent number.

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, 1696046 + ... + 1696725.

It is an arithmetic number, because the mean of its divisors is an integer number (106872318).

Almost surely, 2^1153542140 is an apocalyptic number.

1153542140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1153542140 is an abundant number, since it is smaller than the sum of its proper divisors (1411393492).

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

1153542140 is a wasteful number, since it uses less digits than its factorization.

1153542140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392797 (or 3392795 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1153542140 is about 33963.8357668859. The cubic root of 1153542140 is about 1048.7641211151.

Adding to 1153542140 its reverse (412453511), we get a palindrome (1565995651).

The spelling of 1153542140 in words is "one billion, one hundred fifty-three million, five hundred forty-two thousand, one hundred forty".