1243206531054 has 48 divisors (see below), whose sum is σ = 2786633085600. Its totient is φ = 400092963648.

The previous prime is 1243206531043. The next prime is 1243206531067. The reversal of 1243206531054 is 4501356023421.

1243206531054 is a `hidden beast` number, since 12 + 4 + 320 + 6 + 5 + 310 + 5 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13876567 + ... + 13965869.

It is an arithmetic number, because the mean of its divisors is an integer number (58054855950).

Almost surely, 2^{1243206531054} is an apocalyptic number.

1243206531054 is an abundant number, since it is smaller than the sum of its proper divisors (1543426554546).

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

1243206531054 is a wasteful number, since it uses less digits than its factorization.

1243206531054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116009 (or 116006 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 1243206531054 in words is "one trillion, two hundred forty-three billion, two hundred six million, five hundred thirty-one thousand, fifty-four".