142850321 has 2 divisors, whose sum is σ = 142850322. Its totient is φ = 142850320.

The previous prime is 142850299. The next prime is 142850327. The reversal of 142850321 is 123058241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98227921 + 44622400 = 9911^2 + 6680^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142850321 is a prime.

It is equal to p_8064026 and since 142850321 and 8064026 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (142850327) 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, 71425160 + 71425161.

It is an arithmetic number, because the mean of its divisors is an integer number (71425161).

Almost surely, 2^142850321 is an apocalyptic number.

It is an amenable number.

142850321 is a deficient number, since it is larger than the sum of its proper divisors (1).

142850321 is an equidigital number, since it uses as much as digits as its factorization.

142850321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 142850321 is about 11952.0007111780. Note that the first 3 decimals coincide. The cubic root of 142850321 is about 522.7496373553.

The spelling of 142850321 in words is "one hundred forty-two million, eight hundred fifty thousand, three hundred twenty-one".