1243125535000 has 80 divisors (see below), whose sum is σ = 2983683696840. Its totient is φ = 485122080000.

The previous prime is 1243125534971. The next prime is 1243125535019. The reversal of 1243125535000 is 5355213421.

It is a super-2 number, since 2×1243125535000² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2827014 + ... + 3237013.

Almost surely, 2^{1243125535000} is an apocalyptic number.

1243125535000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243125535000 is an abundant number, since it is smaller than the sum of its proper divisors (1740558161840).

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

1243125535000 is an equidigital number, since it uses as much as digits as its factorization.

1243125535000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6064094 (or 6064075 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 1243125535000 in words is "one trillion, two hundred forty-three billion, one hundred twenty-five million, five hundred thirty-five thousand".