162420077 has 2 divisors, whose sum is σ = 162420078. Its totient is φ = 162420076.

The previous prime is 162420017. The next prime is 162420079. The reversal of 162420077 is 770024261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125865961 + 36554116 = 11219^2 + 6046^2 .

It is an emirp because it is prime and its reverse (770024261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162420077 - 2⁸ = 162419821 is a prime.

Together with 162420079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162420079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81210038 + 81210039.

It is an arithmetic number, because the mean of its divisors is an integer number (81210039).

Almost surely, 2^162420077 is an apocalyptic number.

It is an amenable number.

162420077 is a deficient number, since it is larger than the sum of its proper divisors (1).

162420077 is an equidigital number, since it uses as much as digits as its factorization.

162420077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 162420077 is about 12744.4135604586. The cubic root of 162420077 is about 545.6069628662.

The spelling of 162420077 in words is "one hundred sixty-two million, four hundred twenty thousand, seventy-seven".