121689026 has 8 divisors (see below), whose sum is σ = 193270860. Its totient is φ = 57265408.

The previous prime is 121689019. The next prime is 121689031. The reversal of 121689026 is 620986121.

It can be written as a sum of positive squares in 2 ways, for example, as 121330225 + 358801 = 11015^2 + 599^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1789511 + ... + 1789578.

Almost surely, 2^121689026 is an apocalyptic number.

121689026 is a deficient number, since it is larger than the sum of its proper divisors (71581834).

121689026 is a wasteful number, since it uses less digits than its factorization.

121689026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3579108.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 121689026 is about 11031.2749036546. The cubic root of 121689026 is about 495.5458061415.

The spelling of 121689026 in words is "one hundred twenty-one million, six hundred eighty-nine thousand, twenty-six".