243521303142 has 16 divisors (see below), whose sum is σ = 524507422320. Its totient is φ = 74929631712.

The previous prime is 243521303107. The next prime is 243521303143. The reversal of 243521303142 is 241303125342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243521303143) 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, 1561033917 + ... + 1561034072.

It is an arithmetic number, because the mean of its divisors is an integer number (32781713895).

Almost surely, 2^243521303142 is an apocalyptic number.

243521303142 is an abundant number, since it is smaller than the sum of its proper divisors (280986119178).

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

243521303142 is a wasteful number, since it uses less digits than its factorization.

243521303142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122068007.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 243521303142 its reverse (241303125342), we get a palindrome (484824428484).

The spelling of 243521303142 in words is "two hundred forty-three billion, five hundred twenty-one million, three hundred three thousand, one hundred forty-two".