141121042143421 has 4 divisors (see below), whose sum is σ = 141304554552700. Its totient is φ = 140937529734144.

The previous prime is 141121042143359. The next prime is 141121042143443. The reversal of 141121042143421 is 124341240121141.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 111736294750521 + 29384747392900 = 10570539^2 + 5420770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-141121042143421 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 (141121042143821) 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, 91756203486 + ... + 91756205023.

It is an arithmetic number, because the mean of its divisors is an integer number (35326138638175).

Almost surely, 2^{141121042143421} is an apocalyptic number.

It is an amenable number.

141121042143421 is a deficient number, since it is larger than the sum of its proper divisors (183512409279).

141121042143421 is an equidigital number, since it uses as much as digits as its factorization.

141121042143421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183512409278.

The product of its (nonzero) digits is 6144, while the sum is 31.

Adding to 141121042143421 its reverse (124341240121141), we get a palindrome (265462282264562).

The spelling of 141121042143421 in words is "one hundred forty-one trillion, one hundred twenty-one billion, forty-two million, one hundred forty-three thousand, four hundred twenty-one".