243422142440 has 64 divisors (see below), whose sum is σ = 560854229760. Its totient is φ = 95041416960.

The previous prime is 243422142419. The next prime is 243422142461. The reversal of 243422142440 is 44241224342.

It is an interprime number because it is at equal distance from previous prime (243422142419) and next prime (243422142461).

It is a junction number, because it is equal to n+sod(n) for n = 243422142397 and 243422142406.

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, 527675 + ... + 874805.

It is an arithmetic number, because the mean of its divisors is an integer number (8763347340).

Almost surely, 2^243422142440 is an apocalyptic number.

243422142440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243422142440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280427114880).

243422142440 is an abundant number, since it is smaller than the sum of its proper divisors (317432087320).

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

243422142440 is a wasteful number, since it uses less digits than its factorization.

243422142440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347562 (or 347558 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 243422142440 its reverse (44241224342), we get a palindrome (287663366782).

The spelling of 243422142440 in words is "two hundred forty-three billion, four hundred twenty-two million, one hundred forty-two thousand, four hundred forty".