42842797 has 2 divisors, whose sum is σ = 42842798. Its totient is φ = 42842796.

The previous prime is 42842729. The next prime is 42842819. The reversal of 42842797 is 79724824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42172036 + 670761 = 6494^2 + 819^2 .

It is a cyclic number.

It is not a de Polignac number, because 42842797 - 2¹⁹ = 42318509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42842717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21421398 + 21421399.

It is an arithmetic number, because the mean of its divisors is an integer number (21421399).

Almost surely, 2^42842797 is an apocalyptic number.

It is an amenable number.

42842797 is a deficient number, since it is larger than the sum of its proper divisors (1).

42842797 is an equidigital number, since it uses as much as digits as its factorization.

42842797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 43.

The square root of 42842797 is about 6545.4409324353. The cubic root of 42842797 is about 349.9123508413.

The spelling of 42842797 in words is "forty-two million, eight hundred forty-two thousand, seven hundred ninety-seven".