1253032345240 has 128 divisors (see below), whose sum is σ = 3100591872000. Its totient is φ = 452910786048.

The previous prime is 1253032345199. The next prime is 1253032345241. The reversal of 1253032345240 is 425432303521.

It is a junction number, because it is equal to n+sod(n) for n = 1253032345196 and 1253032345205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253032345241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7247077 + ... + 7417963.

It is an arithmetic number, because the mean of its divisors is an integer number (24223374000).

Almost surely, 2^{1253032345240} is an apocalyptic number.

1253032345240 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 1253032345240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1550295936000).

1253032345240 is an abundant number, since it is smaller than the sum of its proper divisors (1847559526760).

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

1253032345240 is a wasteful number, since it uses less digits than its factorization.

1253032345240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171209 (or 171205 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 1253032345240 its reverse (425432303521), we get a palindrome (1678464648761).

The spelling of 1253032345240 in words is "one trillion, two hundred fifty-three billion, thirty-two million, three hundred forty-five thousand, two hundred forty".