243130442042 has 16 divisors (see below), whose sum is σ = 365534952552. Its totient is φ = 121285528320.

The previous prime is 243130442029. The next prime is 243130442057. The reversal of 243130442042 is 240244031342.

It can be written as a sum of positive squares in 4 ways, for example, as 182688711241 + 60441730801 = 427421^2 + 245849^2 .

It is a super-2 number, since 2×243130442042² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243130441996 and 243130442014.

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, 10293398 + ... + 10316990.

Almost surely, 2^243130442042 is an apocalyptic number.

243130442042 is a deficient number, since it is larger than the sum of its proper divisors (122404510510).

243130442042 is a wasteful number, since it uses less digits than its factorization.

243130442042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35233.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 243130442042 its reverse (240244031342), we get a palindrome (483374473384).

The spelling of 243130442042 in words is "two hundred forty-three billion, one hundred thirty million, four hundred forty-two thousand, forty-two".