243120415012 has 12 divisors (see below), whose sum is σ = 431288955916. Its totient is φ = 119894999040.

The previous prime is 243120415009. The next prime is 243120415019. The reversal of 243120415012 is 210514021342.

It can be written as a sum of positive squares in 2 ways, for example, as 100301423616 + 142818991396 = 316704^2 + 377914^2 .

It is a super-2 number, since 2×243120415012² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243120415019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416301789 + ... + 416302372.

Almost surely, 2^243120415012 is an apocalyptic number.

It is an amenable number.

243120415012 is a deficient number, since it is larger than the sum of its proper divisors (188168540904).

243120415012 is a wasteful number, since it uses less digits than its factorization.

243120415012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832604238 (or 832604236 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 243120415012 its reverse (210514021342), we get a palindrome (453634436354).

The spelling of 243120415012 in words is "two hundred forty-three billion, one hundred twenty million, four hundred fifteen thousand, twelve".