1152123500 has 48 divisors (see below), whose sum is σ = 2744999712. Its totient is φ = 418952000.

The previous prime is 1152123377. The next prime is 1152123517. The reversal of 1152123500 is 53212511.

It is a happy number.

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

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 99239 + ... + 110238.

It is an arithmetic number, because the mean of its divisors is an integer number (57187494).

Almost surely, 2^1152123500 is an apocalyptic number.

1152123500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152123500 is an abundant number, since it is smaller than the sum of its proper divisors (1592876212).

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

1152123500 is a wasteful number, since it uses less digits than its factorization.

1152123500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209507 (or 209495 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1152123500 is about 33942.9447750192. The cubic root of 1152123500 is about 1048.3340171739.

The spelling of 1152123500 in words is "one billion, one hundred fifty-two million, one hundred twenty-three thousand, five hundred".