243420131040 has 96 divisors (see below), whose sum is σ = 784605419136. Its totient is φ = 63402447360.

The previous prime is 243420130931. The next prime is 243420131089. The reversal of 243420131040 is 40131024342.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 243420131040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5876166 + ... + 5917445.

It is an arithmetic number, because the mean of its divisors is an integer number (8172973116).

Almost surely, 2^243420131040 is an apocalyptic number.

243420131040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243420131040 is an abundant number, since it is smaller than the sum of its proper divisors (541185288096).

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

243420131040 is a wasteful number, since it uses less digits than its factorization.

243420131040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11793672 (or 11793664 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 243420131040 its reverse (40131024342), we get a palindrome (283551155382).

The spelling of 243420131040 in words is "two hundred forty-three billion, four hundred twenty million, one hundred thirty-one thousand, forty".