382142521 has 2 divisors, whose sum is σ = 382142522. Its totient is φ = 382142520.

The previous prime is 382142503. The next prime is 382142531. The reversal of 382142521 is 125241283.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 376554025 + 5588496 = 19405^2 + 2364^2 .

It is an emirp because it is prime and its reverse (125241283) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 382142521 - 2⁷ = 382142393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 382142521.

It is not a weakly prime, because it can be changed into another prime (382142531) 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, 191071260 + 191071261.

It is an arithmetic number, because the mean of its divisors is an integer number (191071261).

Almost surely, 2^382142521 is an apocalyptic number.

It is an amenable number.

382142521 is a deficient number, since it is larger than the sum of its proper divisors (1).

382142521 is an equidigital number, since it uses as much as digits as its factorization.

382142521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 28.

The square root of 382142521 is about 19548.4659500432. The cubic root of 382142521 is about 725.6743759274.

The spelling of 382142521 in words is "three hundred eighty-two million, one hundred forty-two thousand, five hundred twenty-one".