122819947 has 2 divisors, whose sum is σ = 122819948. Its totient is φ = 122819946.

The previous prime is 122819941. The next prime is 122820013. The reversal of 122819947 is 749918221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122819947 - 2¹¹ = 122817899 is a prime.

It is not a weakly prime, because it can be changed into another prime (122819941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61409973 + 61409974.

It is an arithmetic number, because the mean of its divisors is an integer number (61409974).

Almost surely, 2^122819947 is an apocalyptic number.

122819947 is a deficient number, since it is larger than the sum of its proper divisors (1).

122819947 is an equidigital number, since it uses as much as digits as its factorization.

122819947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 43.

The square root of 122819947 is about 11082.4161174358. The cubic root of 122819947 is about 497.0761987653.

The spelling of 122819947 in words is "one hundred twenty-two million, eight hundred nineteen thousand, nine hundred forty-seven".