1243367120040 has 64 divisors (see below), whose sum is σ = 3730933180800. Its totient is φ = 331490625792.

The previous prime is 1243367120029. The next prime is 1243367120053. The reversal of 1243367120040 is 400217633421.

It is a junction number, because it is equal to n+sod(n) for n = 1243367119983 and 1243367120010.

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, 613900 + ... + 1692219.

It is an arithmetic number, because the mean of its divisors is an integer number (58295830950).

Almost surely, 2^{1243367120040} is an apocalyptic number.

1243367120040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243367120040 is an abundant number, since it is smaller than the sum of its proper divisors (2487566060760).

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

1243367120040 is a wasteful number, since it uses less digits than its factorization.

1243367120040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310626 (or 2310622 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The spelling of 1243367120040 in words is "one trillion, two hundred forty-three billion, three hundred sixty-seven million, one hundred twenty thousand, forty".