122774783 has 2 divisors, whose sum is σ = 122774784. Its totient is φ = 122774782.

The previous prime is 122774749. The next prime is 122774791. The reversal of 122774783 is 387477221.

It is a strong prime.

It is an emirp because it is prime and its reverse (387477221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122774783 - 2¹⁴ = 122758399 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122774783.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122774723) 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, 61387391 + 61387392.

It is an arithmetic number, because the mean of its divisors is an integer number (61387392).

Almost surely, 2^122774783 is an apocalyptic number.

122774783 is a deficient number, since it is larger than the sum of its proper divisors (1).

122774783 is an equidigital number, since it uses as much as digits as its factorization.

122774783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131712, while the sum is 41.

The square root of 122774783 is about 11080.3782877662. The cubic root of 122774783 is about 497.0152621331.

The spelling of 122774783 in words is "one hundred twenty-two million, seven hundred seventy-four thousand, seven hundred eighty-three".