1243740040704 has 640 divisors, whose sum is σ = 4344831912960. Its totient is φ = 343896883200.

The previous prime is 1243740040687. The next prime is 1243740040721. The reversal of 1243740040704 is 4070400473421.

It is a happy number.

1243740040704 is a `hidden beast` number, since 1 + 243 + 7 + 4 + 0 + 0 + 407 + 0 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1243740040687) and next prime (1243740040721).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 519739732 + ... + 519742124.

It is an arithmetic number, because the mean of its divisors is an integer number (6788799864).

Almost surely, 2^{1243740040704} is an apocalyptic number.

1243740040704 is a gapful number since it is divisible by the number (14) 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 1243740040704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2172415956480).

1243740040704 is an abundant number, since it is smaller than the sum of its proper divisors (3101091872256).

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

1243740040704 is a wasteful number, since it uses less digits than its factorization.

1243740040704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599 (or 2577 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 36.

The spelling of 1243740040704 in words is "one trillion, two hundred forty-three billion, seven hundred forty million, forty thousand, seven hundred four".