1253110121340 has 384 divisors, whose sum is σ = 4522858905600. Its totient is φ = 251582284800.

The previous prime is 1253110121311. The next prime is 1253110121401. The reversal of 1253110121340 is 431210113521.

It is a self number, because there is not a number n which added to its sum of digits gives 1253110121340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 93515961 + ... + 93529359.

It is an arithmetic number, because the mean of its divisors is an integer number (11778278400).

Almost surely, 2^{1253110121340} is an apocalyptic number.

1253110121340 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 1253110121340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2261429452800).

1253110121340 is an abundant number, since it is smaller than the sum of its proper divisors (3269748784260).

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

1253110121340 is a wasteful number, since it uses less digits than its factorization.

1253110121340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14113 (or 14111 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 1253110121340 its reverse (431210113521), we get a palindrome (1684320234861).

The spelling of 1253110121340 in words is "one trillion, two hundred fifty-three billion, one hundred ten million, one hundred twenty-one thousand, three hundred forty".