142321441 has 2 divisors, whose sum is σ = 142321442. Its totient is φ = 142321440.

The previous prime is 142321429. The next prime is 142321451. The reversal of 142321441 is 144123241.

It is a happy number.

142321441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141705216 + 616225 = 11904^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 142321441 - 2⁷ = 142321313 is a prime.

It is not a weakly prime, because it can be changed into another prime (142321451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71160720 + 71160721.

It is an arithmetic number, because the mean of its divisors is an integer number (71160721).

Almost surely, 2^142321441 is an apocalyptic number.

It is an amenable number.

142321441 is a deficient number, since it is larger than the sum of its proper divisors (1).

142321441 is an equidigital number, since it uses as much as digits as its factorization.

142321441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 22.

The square root of 142321441 is about 11929.8550284570. The cubic root of 142321441 is about 522.1037078092.

Adding to 142321441 its reverse (144123241), we get a palindrome (286444682).

The spelling of 142321441 in words is "one hundred forty-two million, three hundred twenty-one thousand, four hundred forty-one".