243554455342 has 16 divisors (see below), whose sum is σ = 399241649664. Its totient is φ = 110512683000.

The previous prime is 243554455327. The next prime is 243554455387.

It is a happy number.

243554455342 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 243554455292 and 243554455301.

It is a congruent number.

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, 9681534 + ... + 9706657.

It is an arithmetic number, because the mean of its divisors is an integer number (24952603104).

Almost surely, 2^243554455342 is an apocalyptic number.

243554455342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243554455342 is a deficient number, since it is larger than the sum of its proper divisors (155687194322).

243554455342 is a wasteful number, since it uses less digits than its factorization.

243554455342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19388775.

The product of its digits is 5760000, while the sum is 46.

It can be divided in two parts, 243554 and 455342, that added together give a palindrome (698896).

The spelling of 243554455342 in words is "two hundred forty-three billion, five hundred fifty-four million, four hundred fifty-five thousand, three hundred forty-two".