243315102042 has 16 divisors (see below), whose sum is σ = 540700226880. Its totient is φ = 81105033996.

The previous prime is 243315102031. The next prime is 243315102047. The reversal of 243315102042 is 240201513342.

243315102042 is a `hidden beast` number, since 2 + 433 + 15 + 10 + 204 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 243315101997 and 243315102015.

It is not an unprimeable number, because it can be changed into a prime (243315102047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2252917558 + ... + 2252917665.

It is an arithmetic number, because the mean of its divisors is an integer number (33793764180).

Almost surely, 2^243315102042 is an apocalyptic number.

243315102042 is an abundant number, since it is smaller than the sum of its proper divisors (297385124838).

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

243315102042 is a wasteful number, since it uses less digits than its factorization.

243315102042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505835234 (or 4505835228 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 243315102042 its reverse (240201513342), we get a palindrome (483516615384).

The spelling of 243315102042 in words is "two hundred forty-three billion, three hundred fifteen million, one hundred two thousand, forty-two".