1298750423040 has 600 divisors, whose sum is σ = 5321468800032. Its totient is φ = 296846622720.

The previous prime is 1298750423027. The next prime is 1298750423051. The reversal of 1298750423040 is 403240578921.

1298750423040 is a `hidden beast` number, since 1 + 2 + 9 + 87 + 504 + 23 + 0 + 40 = 666.

It is a super-2 number, since 2×1298750423040² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 46434660 + ... + 46462620.

Almost surely, 2^{1298750423040} is an apocalyptic number.

1298750423040 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 1298750423040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2660734400016).

1298750423040 is an abundant number, since it is smaller than the sum of its proper divisors (4022718376992).

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

1298750423040 is an frugal number, since it uses more digits than its factorization.

1298750423040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28013 (or 27978 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 1298750423040 in words is "one trillion, two hundred ninety-eight billion, seven hundred fifty million, four hundred twenty-three thousand, forty".