243121240054 has 64 divisors (see below), whose sum is σ = 478871212032. Its totient is φ = 89757280800.

The previous prime is 243121240049. The next prime is 243121240081. The reversal of 243121240054 is 450042121342.

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, 58249 + ... + 699739.

It is an arithmetic number, because the mean of its divisors is an integer number (7482362688).

Almost surely, 2^243121240054 is an apocalyptic number.

243121240054 is a deficient number, since it is larger than the sum of its proper divisors (235749971978).

243121240054 is a wasteful number, since it uses less digits than its factorization.

243121240054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641641.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 243121240054 its reverse (450042121342), we get a palindrome (693163361396).

The spelling of 243121240054 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty thousand, fifty-four".