517426123 has 2 divisors, whose sum is σ = 517426124. Its totient is φ = 517426122.

The previous prime is 517426087. The next prime is 517426141. The reversal of 517426123 is 321624715.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 517426123 - 2²¹ = 515328971 is a prime.

It is a super-2 number, since 2×517426123² = 535459585525622258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (517426223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258713061 + 258713062.

It is an arithmetic number, because the mean of its divisors is an integer number (258713062).

Almost surely, 2^517426123 is an apocalyptic number.

517426123 is a deficient number, since it is larger than the sum of its proper divisors (1).

517426123 is an equidigital number, since it uses as much as digits as its factorization.

517426123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 517426123 is about 22747.0025058248. The cubic root of 517426123 is about 802.8161805057.

The spelling of 517426123 in words is "five hundred seventeen million, four hundred twenty-six thousand, one hundred twenty-three".