243401421140 has 24 divisors (see below), whose sum is σ = 511630295400. Its totient is φ = 97267747328.

The previous prime is 243401421089. The next prime is 243401421191. The reversal of 243401421140 is 41124104342.

It is an interprime number because it is at equal distance from previous prime (243401421089) and next prime (243401421191).

It can be written as a sum of positive squares in 4 ways, for example, as 58642434244 + 184758986896 = 242162^2 + 429836^2 .

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, 5779817 + ... + 5821776.

It is an arithmetic number, because the mean of its divisors is an integer number (21317928975).

Almost surely, 2^243401421140 is an apocalyptic number.

243401421140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243401421140 is an abundant number, since it is smaller than the sum of its proper divisors (268228874260).

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

243401421140 is a wasteful number, since it uses less digits than its factorization.

243401421140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11602651 (or 11602649 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 243401421140 its reverse (41124104342), we get a palindrome (284525525482).

The spelling of 243401421140 in words is "two hundred forty-three billion, four hundred one million, four hundred twenty-one thousand, one hundred forty".