162420571 has 2 divisors, whose sum is σ = 162420572. Its totient is φ = 162420570.

The previous prime is 162420551. The next prime is 162420611. The reversal of 162420571 is 175024261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 162420571 - 2⁵ = 162420539 is a prime.

It is not a weakly prime, because it can be changed into another prime (162420521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81210285 + 81210286.

It is an arithmetic number, because the mean of its divisors is an integer number (81210286).

Almost surely, 2^162420571 is an apocalyptic number.

162420571 is a deficient number, since it is larger than the sum of its proper divisors (1).

162420571 is an equidigital number, since it uses as much as digits as its factorization.

162420571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 162420571 is about 12744.4329414847. The cubic root of 162420571 is about 545.6075160194.

The spelling of 162420571 in words is "one hundred sixty-two million, four hundred twenty thousand, five hundred seventy-one".