122139077 has 2 divisors, whose sum is σ = 122139078. Its totient is φ = 122139076.

The previous prime is 122139071. The next prime is 122139091. The reversal of 122139077 is 770931221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67881121 + 54257956 = 8239^2 + 7366^2 .

It is an emirp because it is prime and its reverse (770931221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122139077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122139071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61069538 + 61069539.

It is an arithmetic number, because the mean of its divisors is an integer number (61069539).

Almost surely, 2^122139077 is an apocalyptic number.

It is an amenable number.

122139077 is a deficient number, since it is larger than the sum of its proper divisors (1).

122139077 is an equidigital number, since it uses as much as digits as its factorization.

122139077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 122139077 is about 11051.6549439439. The cubic root of 122139077 is about 496.1559584248.

The spelling of 122139077 in words is "one hundred twenty-two million, one hundred thirty-nine thousand, seventy-seven".