121061789 has 4 divisors (see below), whose sum is σ = 124967040. Its totient is φ = 117156540.

The previous prime is 121061783. The next prime is 121061791. The reversal of 121061789 is 987160121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121061789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121061783) 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, 1952579 + ... + 1952640.

It is an arithmetic number, because the mean of its divisors is an integer number (31241760).

Almost surely, 2^121061789 is an apocalyptic number.

It is an amenable number.

121061789 is a deficient number, since it is larger than the sum of its proper divisors (3905251).

121061789 is an equidigital number, since it uses as much as digits as its factorization.

121061789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3905250.

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 121061789 is about 11002.8082324468. The cubic root of 121061789 is about 494.6929211268.

The spelling of 121061789 in words is "one hundred twenty-one million, sixty-one thousand, seven hundred eighty-nine".