123020507 has 2 divisors, whose sum is σ = 123020508. Its totient is φ = 123020506.

The previous prime is 123020441. The next prime is 123020533. The reversal of 123020507 is 705020321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123020507 - 2¹⁰ = 123019483 is a prime.

It is not a weakly prime, because it can be changed into another prime (123020587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61510253 + 61510254.

It is an arithmetic number, because the mean of its divisors is an integer number (61510254).

Almost surely, 2^123020507 is an apocalyptic number.

123020507 is a deficient number, since it is larger than the sum of its proper divisors (1).

123020507 is an equidigital number, since it uses as much as digits as its factorization.

123020507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 123020507 is about 11091.4609948374. The cubic root of 123020507 is about 497.3466200577.

Adding to 123020507 its reverse (705020321), we get a palindrome (828040828).

The spelling of 123020507 in words is "one hundred twenty-three million, twenty thousand, five hundred seven".