121704769 has 4 divisors (see below), whose sum is σ = 124673220. Its totient is φ = 118736320.

The previous prime is 121704767. The next prime is 121704811. The reversal of 121704769 is 967407121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 967407121 = 269 ⋅3596309.

It can be written as a sum of positive squares in 2 ways, for example, as 9090225 + 112614544 = 3015^2 + 10612^2 .

It is a cyclic number.

It is not a de Polignac number, because 121704769 - 2¹ = 121704767 is a prime.

It is a super-2 number, since 2×121704769² = 29624101594686722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121704767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1484164 + ... + 1484245.

It is an arithmetic number, because the mean of its divisors is an integer number (31168305).

Almost surely, 2^121704769 is an apocalyptic number.

It is an amenable number.

121704769 is a deficient number, since it is larger than the sum of its proper divisors (2968451).

121704769 is an equidigital number, since it uses as much as digits as its factorization.

121704769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2968450.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 121704769 is about 11031.9884427061. The cubic root of 121704769 is about 495.5671749301.

It can be divided in two parts, 12 and 1704769, that added together give a triangular number (1704781 = T₁₈₄₆).

The spelling of 121704769 in words is "one hundred twenty-one million, seven hundred four thousand, seven hundred sixty-nine".