122920507 has 2 divisors, whose sum is σ = 122920508. Its totient is φ = 122920506.

The previous prime is 122920417. The next prime is 122920537. The reversal of 122920507 is 705029221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122920507 - 2²³ = 114531899 is a prime.

It is a super-2 number, since 2×122920507² = 30218902082274098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122920537) 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, 61460253 + 61460254.

It is an arithmetic number, because the mean of its divisors is an integer number (61460254).

Almost surely, 2^122920507 is an apocalyptic number.

122920507 is a deficient number, since it is larger than the sum of its proper divisors (1).

122920507 is an equidigital number, since it uses as much as digits as its factorization.

122920507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 122920507 is about 11086.9521059667. The cubic root of 122920507 is about 497.2118237128.

Adding to 122920507 its reverse (705029221), we get a palindrome (827949728).

It can be divided in two parts, 1229 and 20507, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 122920507 in words is "one hundred twenty-two million, nine hundred twenty thousand, five hundred seven".