243155551342 has 16 divisors (see below), whose sum is σ = 421296250032. Its totient is φ = 104023765120.

The previous prime is 243155551337. The next prime is 243155551349.

243155551342 is nontrivially palindromic in base 10.

243155551342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 243155551295 and 243155551304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243155551349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325073893 + ... + 325074640.

It is an arithmetic number, because the mean of its divisors is an integer number (26331015627).

Almost surely, 2^243155551342 is an apocalyptic number.

243155551342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243155551342 is a deficient number, since it is larger than the sum of its proper divisors (178140698690).

243155551342 is a wasteful number, since it uses less digits than its factorization.

243155551342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650148563.

The product of its digits is 360000, while the sum is 40.

It can be divided in two parts, 243155 and 551342, that added together give a palindrome (794497).

The spelling of 243155551342 in words is "two hundred forty-three billion, one hundred fifty-five million, five hundred fifty-one thousand, three hundred forty-two".