243215054540042 has 16 divisors (see below), whose sum is σ = 392886165477120. Its totient is φ = 112253014054512.

The previous prime is 243215054540039. The next prime is 243215054540071. The reversal of 243215054540042 is 240045450512342.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39868559 + ... + 45562397.

It is an arithmetic number, because the mean of its divisors is an integer number (24555385342320).

Almost surely, 2^{243215054540042} is an apocalyptic number.

243215054540042 is a deficient number, since it is larger than the sum of its proper divisors (149671110937078).

243215054540042 is a wasteful number, since it uses less digits than its factorization.

243215054540042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7336757.

The product of its (nonzero) digits is 768000, while the sum is 41.

The spelling of 243215054540042 in words is "two hundred forty-three trillion, two hundred fifteen billion, fifty-four million, five hundred forty thousand, forty-two".