121987295 has 8 divisors (see below), whose sum is σ = 147834720. Its totient is φ = 96623200.

The previous prime is 121987289. The next prime is 121987309. The reversal of 121987295 is 592789121.

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 121987295 - 2¹⁴ = 121970911 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120275 + ... + 121284.

It is an arithmetic number, because the mean of its divisors is an integer number (18479340).

Almost surely, 2^121987295 is an apocalyptic number.

121987295 is a deficient number, since it is larger than the sum of its proper divisors (25847425).

121987295 is a wasteful number, since it uses less digits than its factorization.

121987295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241665.

The product of its digits is 90720, while the sum is 44.

The square root of 121987295 is about 11044.7858738864. The cubic root of 121987295 is about 495.9503492075.

The spelling of 121987295 in words is "one hundred twenty-one million, nine hundred eighty-seven thousand, two hundred ninety-five".