1152145420 has 24 divisors (see below), whose sum is σ = 2561829984. Its totient is φ = 433748736.

The previous prime is 1152145399. The next prime is 1152145439. The reversal of 1152145420 is 245412511.

1152145420 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 1693992 + ... + 1694671.

It is an arithmetic number, because the mean of its divisors is an integer number (106742916).

Almost surely, 2^1152145420 is an apocalyptic number.

1152145420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152145420 is an abundant number, since it is smaller than the sum of its proper divisors (1409684564).

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

1152145420 is a wasteful number, since it uses less digits than its factorization.

1152145420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3388689 (or 3388687 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1152145420 is about 33943.2676682726. The cubic root of 1152145420 is about 1048.3406655746.

Adding to 1152145420 its reverse (245412511), we get a palindrome (1397557931).

The spelling of 1152145420 in words is "one billion, one hundred fifty-two million, one hundred forty-five thousand, four hundred twenty".