243132100042 has 48 divisors (see below), whose sum is σ = 422332785000. Its totient is φ = 104302733184.

The previous prime is 243132100021. The next prime is 243132100067. The reversal of 243132100042 is 240001231342.

It can be written as a sum of positive squares in 4 ways, for example, as 215436150801 + 27695949241 = 464151^2 + 166421^2 .

It is a super-2 number, since 2×243132100042² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243132099986 and 243132100022.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 253084 + ... + 741832.

Almost surely, 2^243132100042 is an apocalyptic number.

243132100042 is a deficient number, since it is larger than the sum of its proper divisors (179200684958).

243132100042 is a wasteful number, since it uses less digits than its factorization.

243132100042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488855 (or 488836 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 243132100042 its reverse (240001231342), we get a palindrome (483133331384).

The spelling of 243132100042 in words is "two hundred forty-three billion, one hundred thirty-two million, one hundred thousand, forty-two".