1252020012343 has 4 divisors (see below), whose sum is σ = 1252058313240. Its totient is φ = 1251981711448.

The previous prime is 1252020012301. The next prime is 1252020012379. The reversal of 1252020012343 is 3432100202521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252020012343 is a prime.

It is a super-2 number, since 2×1252020012343² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252020012643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19101373 + ... + 19166806.

It is an arithmetic number, because the mean of its divisors is an integer number (313014578310).

Almost surely, 2^{1252020012343} is an apocalyptic number.

1252020012343 is a deficient number, since it is larger than the sum of its proper divisors (38300897).

1252020012343 is an equidigital number, since it uses as much as digits as its factorization.

1252020012343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38300896.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 1252020012343 its reverse (3432100202521), we get a palindrome (4684120214864).

The spelling of 1252020012343 in words is "one trillion, two hundred fifty-two billion, twenty million, twelve thousand, three hundred forty-three".