622142509 has 2 divisors, whose sum is σ = 622142510. Its totient is φ = 622142508.

The previous prime is 622142501. The next prime is 622142611. The reversal of 622142509 is 905241226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316662025 + 305480484 = 17795^2 + 17478^2 .

It is a cyclic number.

It is not a de Polignac number, because 622142509 - 2³ = 622142501 is a prime.

It is a super-3 number, since 3×622142509³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is equal to p_32419183 and since 622142509 and 32419183 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622142501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311071254 + 311071255.

It is an arithmetic number, because the mean of its divisors is an integer number (311071255).

Almost surely, 2^622142509 is an apocalyptic number.

It is an amenable number.

622142509 is a deficient number, since it is larger than the sum of its proper divisors (1).

622142509 is an equidigital number, since it uses as much as digits as its factorization.

622142509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 622142509 is about 24942.7847082077. The cubic root of 622142509 is about 853.6829849496.

The spelling of 622142509 in words is "six hundred twenty-two million, one hundred forty-two thousand, five hundred nine".