1252312454140 has 48 divisors (see below), whose sum is σ = 2961480259584. Its totient is φ = 440696462400.

The previous prime is 1252312454069. The next prime is 1252312454147. The reversal of 1252312454140 is 414542132521.

It is a junction number, because it is equal to n+sod(n) for n = 1252312454096 and 1252312454105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252312454147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91804944 + ... + 91818583.

It is an arithmetic number, because the mean of its divisors is an integer number (61697505408).

Almost surely, 2^{1252312454140} is an apocalyptic number.

1252312454140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252312454140 is an abundant number, since it is smaller than the sum of its proper divisors (1709167805444).

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

1252312454140 is a wasteful number, since it uses less digits than its factorization.

1252312454140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183623578 (or 183623576 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 1252312454140 its reverse (414542132521), we get a palindrome (1666854586661).

The spelling of 1252312454140 in words is "one trillion, two hundred fifty-two billion, three hundred twelve million, four hundred fifty-four thousand, one hundred forty".