1212543360 has 768 divisors, whose sum is σ = 5327337600. Its totient is φ = 247726080.

The previous prime is 1212543337. The next prime is 1212543373. The reversal of 1212543360 is 633452121.

It is a super-2 number, since 2×1212543360² = 2940522799760179200, which contains 22 as substring.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 19877730 + ... + 19877790.

Almost surely, 2^1212543360 is an apocalyptic number.

1212543360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212543360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2663668800).

1212543360 is an abundant number, since it is smaller than the sum of its proper divisors (4114794240).

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

1212543360 is a wasteful number, since it uses less digits than its factorization.

1212543360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1212543360 is about 34821.5933007093. The cubic root of 1212543360 is about 1066.3483286151.

Adding to 1212543360 its reverse (633452121), we get a palindrome (1845995481).

It can be divided in two parts, 1212543 and 360, that added together give a triangular number (1212903 = T₁₅₅₇).

The spelling of 1212543360 in words is "one billion, two hundred twelve million, five hundred forty-three thousand, three hundred sixty".