121317743 has 2 divisors, whose sum is σ = 121317744. Its totient is φ = 121317742.

The previous prime is 121317739. The next prime is 121317761. The reversal of 121317743 is 347713121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121317743 - 2² = 121317739 is a prime.

It is a super-2 number, since 2×121317743² = 29435989533228098, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121317733) 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, 60658871 + 60658872.

It is an arithmetic number, because the mean of its divisors is an integer number (60658872).

Almost surely, 2^121317743 is an apocalyptic number.

121317743 is a deficient number, since it is larger than the sum of its proper divisors (1).

121317743 is an equidigital number, since it uses as much as digits as its factorization.

121317743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 29.

The square root of 121317743 is about 11014.4333944148. The cubic root of 121317743 is about 495.0413093437.

The spelling of 121317743 in words is "one hundred twenty-one million, three hundred seventeen thousand, seven hundred forty-three".