243642520126104 has 128 divisors (see below), whose sum is σ = 665109358306560. Its totient is φ = 73761105600000.

The previous prime is 243642520126087. The next prime is 243642520126147. The reversal of 243642520126104 is 401621025246342.

It is a super-2 number, since 2×243642520126104² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4000602054 + ... + 4000662954.

It is an arithmetic number, because the mean of its divisors is an integer number (5196166861770).

Almost surely, 2^{243642520126104} is an apocalyptic number.

243642520126104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

243642520126104 is an abundant number, since it is smaller than the sum of its proper divisors (421466838180456).

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

243642520126104 is a wasteful number, since it uses less digits than its factorization.

243642520126104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75033 (or 75029 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 42.

The spelling of 243642520126104 in words is "two hundred forty-three trillion, six hundred forty-two billion, five hundred twenty million, one hundred twenty-six thousand, one hundred four".