1243405346212 has 12 divisors (see below), whose sum is σ = 2179407790336. Its totient is φ = 620717406120.

The previous prime is 1243405346177. The next prime is 1243405346213. The reversal of 1243405346212 is 2126435043421.

It is not an unprimeable number, because it can be changed into a prime (1243405346213) 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, 246313908 + ... + 246318955.

Almost surely, 2^{1243405346212} is an apocalyptic number.

It is an amenable number.

1243405346212 is a deficient number, since it is larger than the sum of its proper divisors (936002444124).

1243405346212 is a wasteful number, since it uses less digits than its factorization.

1243405346212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492633498 (or 492633496 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 1243405346212 in words is "one trillion, two hundred forty-three billion, four hundred five million, three hundred forty-six thousand, two hundred twelve".