142401143021 has 2 divisors, whose sum is σ = 142401143022. Its totient is φ = 142401143020.

The previous prime is 142401143009. The next prime is 142401143099. The reversal of 142401143021 is 120341104241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120696487396 + 21704655625 = 347414^2 + 147325^2 .

It is an emirp because it is prime and its reverse (120341104241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142401143021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142401143321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71200571510 + 71200571511.

It is an arithmetic number, because the mean of its divisors is an integer number (71200571511).

Almost surely, 2^142401143021 is an apocalyptic number.

It is an amenable number.

142401143021 is a deficient number, since it is larger than the sum of its proper divisors (1).

142401143021 is an equidigital number, since it uses as much as digits as its factorization.

142401143021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 142401143021 its reverse (120341104241), we get a palindrome (262742247262).

The spelling of 142401143021 in words is "one hundred forty-two billion, four hundred one million, one hundred forty-three thousand, twenty-one".