1152421056 has 42 divisors (see below), whose sum is σ = 3303208532. Its totient is φ = 384140160.

The previous prime is 1152421051. The next prime is 1152421073. The reversal of 1152421056 is 6501242511.

It is not an unprimeable number, because it can be changed into a prime (1152421051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 999790 + ... + 1000941.

Almost surely, 2^1152421056 is an apocalyptic number.

1152421056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1152421056 is an abundant number, since it is smaller than the sum of its proper divisors (2150787476).

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

1152421056 is a wasteful number, since it uses less digits than its factorization.

1152421056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000749 (or 2000736 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1152421056 is about 33947.3276709670. The cubic root of 1152421056 is about 1048.4242595904.

Adding to 1152421056 its reverse (6501242511), we get a palindrome (7653663567).

The spelling of 1152421056 in words is "one billion, one hundred fifty-two million, four hundred twenty-one thousand, fifty-six".