121712079 has 8 divisors (see below), whose sum is σ = 162334000. Its totient is φ = 81115776.

The previous prime is 121712077. The next prime is 121712083. The reversal of 121712079 is 970217121.

It is a happy number.

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

It is not a de Polignac number, because 121712079 - 2¹ = 121712077 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 (121712077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13719 + ... + 20775.

It is an arithmetic number, because the mean of its divisors is an integer number (20291750).

Almost surely, 2^121712079 is an apocalyptic number.

121712079 is a deficient number, since it is larger than the sum of its proper divisors (40621921).

121712079 is an equidigital number, since it uses as much as digits as its factorization.

121712079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12809.

The product of its (nonzero) digits is 1764, while the sum is 30.

The square root of 121712079 is about 11032.3197469979. The cubic root of 121712079 is about 495.5770965449.

The spelling of 121712079 in words is "one hundred twenty-one million, seven hundred twelve thousand, seventy-nine".