1243035445740 has 192 divisors, whose sum is σ = 3969799787520. Its totient is φ = 287672028160.

The previous prime is 1243035445733. The next prime is 1243035445747. The reversal of 1243035445740 is 475445303421.

It is an interprime number because it is at equal distance from previous prime (1243035445733) and next prime (1243035445747).

It is a junction number, because it is equal to n+sod(n) for n = 1243035445692 and 1243035445701.

It is not an unprimeable number, because it can be changed into a prime (1243035445747) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7646182 + ... + 7807058.

It is an arithmetic number, because the mean of its divisors is an integer number (20676040560).

Almost surely, 2^{1243035445740} is an apocalyptic number.

1243035445740 is a gapful number since it is divisible by the number (10) 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 1243035445740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1984899893760).

1243035445740 is an abundant number, since it is smaller than the sum of its proper divisors (2726764341780).

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

1243035445740 is a wasteful number, since it uses less digits than its factorization.

1243035445740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161432 (or 161430 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 42.

The spelling of 1243035445740 in words is "one trillion, two hundred forty-three billion, thirty-five million, four hundred forty-five thousand, seven hundred forty".