1216534124 has 48 divisors (see below), whose sum is σ = 2450831040. Its totient is φ = 523944960.

The previous prime is 1216534117. The next prime is 1216534129. The reversal of 1216534124 is 4214356121.

It is not an unprimeable number, because it can be changed into a prime (1216534129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36632 + ... + 61440.

It is an arithmetic number, because the mean of its divisors is an integer number (51058980).

Almost surely, 2^1216534124 is an apocalyptic number.

It is an amenable number.

1216534124 is an abundant number, since it is smaller than the sum of its proper divisors (1234296916).

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

1216534124 is a wasteful number, since it uses less digits than its factorization.

1216534124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24890 (or 24888 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 1216534124 is about 34878.8492356041. The cubic root of 1216534124 is about 1067.5169148323.

The spelling of 1216534124 in words is "one billion, two hundred sixteen million, five hundred thirty-four thousand, one hundred twenty-four".