142232401 has 2 divisors, whose sum is σ = 142232402. Its totient is φ = 142232400.

The previous prime is 142232399. The next prime is 142232411. The reversal of 142232401 is 104232241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142181776 + 50625 = 11924^2 + 225^2 .

It is an emirp because it is prime and its reverse (104232241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142232401 - 2¹ = 142232399 is a prime.

Together with 142232399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (142232411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71116200 + 71116201.

It is an arithmetic number, because the mean of its divisors is an integer number (71116201).

Almost surely, 2^142232401 is an apocalyptic number.

It is an amenable number.

142232401 is a deficient number, since it is larger than the sum of its proper divisors (1).

142232401 is an equidigital number, since it uses as much as digits as its factorization.

142232401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 142232401 is about 11926.1226305954. The cubic root of 142232401 is about 521.9948045362.

Adding to 142232401 its reverse (104232241), we get a palindrome (246464642).

The spelling of 142232401 in words is "one hundred forty-two million, two hundred thirty-two thousand, four hundred one".