122720347 has 2 divisors, whose sum is σ = 122720348. Its totient is φ = 122720346.

The previous prime is 122720321. The next prime is 122720363. The reversal of 122720347 is 743027221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122720347 - 2¹⁹ = 122196059 is a prime.

It is not a weakly prime, because it can be changed into another prime (122724347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61360173 + 61360174.

It is an arithmetic number, because the mean of its divisors is an integer number (61360174).

Almost surely, 2^122720347 is an apocalyptic number.

122720347 is a deficient number, since it is larger than the sum of its proper divisors (1).

122720347 is an equidigital number, since it uses as much as digits as its factorization.

122720347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 122720347 is about 11077.9216010947. The cubic root of 122720347 is about 496.9417955743.

Adding to 122720347 its reverse (743027221), we get a palindrome (865747568).

The spelling of 122720347 in words is "one hundred twenty-two million, seven hundred twenty thousand, three hundred forty-seven".