142230401 has 2 divisors, whose sum is σ = 142230402. Its totient is φ = 142230400.

The previous prime is 142230391. The next prime is 142230427. The reversal of 142230401 is 104032241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103042801 + 39187600 = 10151^2 + 6260^2 .

It is a cyclic number.

It is not a de Polignac number, because 142230401 - 2¹⁸ = 141968257 is a prime.

It is equal to p_8031014 and since 142230401 and 8031014 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142230401.

It is not a weakly prime, because it can be changed into another prime (142230461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71115200 + 71115201.

It is an arithmetic number, because the mean of its divisors is an integer number (71115201).

Almost surely, 2^142230401 is an apocalyptic number.

It is an amenable number.

142230401 is a deficient number, since it is larger than the sum of its proper divisors (1).

142230401 is an equidigital number, since it uses as much as digits as its factorization.

142230401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 142230401 is about 11926.0387807520. The cubic root of 142230401 is about 521.9923578492.

Adding to 142230401 its reverse (104032241), we get a palindrome (246262642).

The spelling of 142230401 in words is "one hundred forty-two million, two hundred thirty thousand, four hundred one".