1243466556 has 12 divisors (see below), whose sum is σ = 2901421992. Its totient is φ = 414488848.

The previous prime is 1243466551. The next prime is 1243466657. The reversal of 1243466556 is 6556643421.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1243466556² = 3092418151781002272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243466551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51811095 + ... + 51811118.

It is an arithmetic number, because the mean of its divisors is an integer number (241785166).

Almost surely, 2^1243466556 is an apocalyptic number.

It is an amenable number.

1243466556 is an abundant number, since it is smaller than the sum of its proper divisors (1657955436).

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

1243466556 is a wasteful number, since it uses less digits than its factorization.

1243466556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103622220 (or 103622218 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The square root of 1243466556 is about 35262.8211577009. The cubic root of 1243466556 is about 1075.3372818716.

The spelling of 1243466556 in words is "one billion, two hundred forty-three million, four hundred sixty-six thousand, five hundred fifty-six".