121997846 has 4 divisors (see below), whose sum is σ = 182996772. Its totient is φ = 60998922.

The previous prime is 121997807. The next prime is 121997857. The reversal of 121997846 is 648799121.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121997846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30499460 + ... + 30499463.

It is an arithmetic number, because the mean of its divisors is an integer number (45749193).

Almost surely, 2^121997846 is an apocalyptic number.

121997846 is a deficient number, since it is larger than the sum of its proper divisors (60998926).

121997846 is an equidigital number, since it uses as much as digits as its factorization.

121997846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60998925.

The product of its digits is 217728, while the sum is 47.

The square root of 121997846 is about 11045.2635097584. The cubic root of 121997846 is about 495.9646474760.

The spelling of 121997846 in words is "one hundred twenty-one million, nine hundred ninety-seven thousand, eight hundred forty-six".