1025121140143 has 4 divisors (see below), whose sum is σ = 1026567009880. Its totient is φ = 1023675270408.

The previous prime is 1025121140137. The next prime is 1025121140189. The reversal of 1025121140143 is 3410411215201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1025121140143 - 2¹⁷ = 1025121009071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025121150143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722933805 + ... + 722935222.

It is an arithmetic number, because the mean of its divisors is an integer number (256641752470).

Almost surely, 2^{1025121140143} is an apocalyptic number.

1025121140143 is a deficient number, since it is larger than the sum of its proper divisors (1445869737).

1025121140143 is an equidigital number, since it uses as much as digits as its factorization.

1025121140143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445869736.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 1025121140143 its reverse (3410411215201), we get a palindrome (4435532355344).

The spelling of 1025121140143 in words is "one trillion, twenty-five billion, one hundred twenty-one million, one hundred forty thousand, one hundred forty-three".