243201542124 has 48 divisors (see below), whose sum is σ = 592685452800. Its totient is φ = 77539283136.

The previous prime is 243201542123. The next prime is 243201542203. The reversal of 243201542124 is 421245102342.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 243201542091 and 243201542100.

It is not an unprimeable number, because it can be changed into a prime (243201542123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4615764 + ... + 4668155.

It is an arithmetic number, because the mean of its divisors is an integer number (12347613600).

Almost surely, 2^243201542124 is an apocalyptic number.

It is an amenable number.

243201542124 is an abundant number, since it is smaller than the sum of its proper divisors (349483910676).

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

243201542124 is a wasteful number, since it uses less digits than its factorization.

243201542124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9284022 (or 9284020 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 243201542124 its reverse (421245102342), we get a palindrome (664446644466).

The spelling of 243201542124 in words is "two hundred forty-three billion, two hundred one million, five hundred forty-two thousand, one hundred twenty-four".