121713259 has 6 divisors (see below), whose sum is σ = 128169860. Its totient is φ = 115261740.

The previous prime is 121713233. The next prime is 121713287. The reversal of 121713259 is 952317121.

It is not a de Polignac number, because 121713259 - 2⁵ = 121713227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121713259.

It is not an unprimeable number, because it can be changed into a prime (121713209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46824 + ... + 49354.

Almost surely, 2^121713259 is an apocalyptic number.

121713259 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

121713259 is a deficient number, since it is larger than the sum of its proper divisors (6456601).

121713259 is an frugal number, since it uses more digits than its factorization.

121713259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5081 (or 2550 counting only the distinct ones).

The product of its digits is 3780, while the sum is 31.

The square root of 121713259 is about 11032.3732261014. The cubic root of 121713259 is about 495.5786980816.

The spelling of 121713259 in words is "one hundred twenty-one million, seven hundred thirteen thousand, two hundred fifty-nine".