243121014040 has 32 divisors (see below), whose sum is σ = 579200064480. Its totient is φ = 91527910912.

The previous prime is 243121014007. The next prime is 243121014083. The reversal of 243121014040 is 40410121342.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178764772 + ... + 178766131.

It is an arithmetic number, because the mean of its divisors is an integer number (18100002015).

Almost surely, 2^243121014040 is an apocalyptic number.

243121014040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243121014040 is an abundant number, since it is smaller than the sum of its proper divisors (336079050440).

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

243121014040 is a wasteful number, since it uses less digits than its factorization.

243121014040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357530931 (or 357530927 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 243121014040 its reverse (40410121342), we get a palindrome (283531135382).

The spelling of 243121014040 in words is "two hundred forty-three billion, one hundred twenty-one million, fourteen thousand, forty".