243201015124 has 24 divisors (see below), whose sum is σ = 426081133800. Its totient is φ = 121463623680.

The previous prime is 243201015103. The next prime is 243201015137. The reversal of 243201015124 is 421510102342.

It can be written as a sum of positive squares in 4 ways, for example, as 1943222724 + 241257792400 = 44082^2 + 491180^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16918212 + ... + 16932580.

It is an arithmetic number, because the mean of its divisors is an integer number (17753380575).

Almost surely, 2^243201015124 is an apocalyptic number.

It is an amenable number.

243201015124 is a deficient number, since it is larger than the sum of its proper divisors (182880118676).

243201015124 is a wasteful number, since it uses less digits than its factorization.

243201015124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18843 (or 18841 counting only the distinct ones).

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

Adding to 243201015124 its reverse (421510102342), we get a palindrome (664711117466).

The spelling of 243201015124 in words is "two hundred forty-three billion, two hundred one million, fifteen thousand, one hundred twenty-four".