121443967 has 8 divisors (see below), whose sum is σ = 126187200. Its totient is φ = 116737824.

The previous prime is 121443923. The next prime is 121443983. The reversal of 121443967 is 769344121.

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

It is a cyclic number.

It is not a de Polignac number, because 121443967 - 2¹¹ = 121441919 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 (121443167) 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, 2503 + ... + 15784.

It is an arithmetic number, because the mean of its divisors is an integer number (15773400).

Almost surely, 2^121443967 is an apocalyptic number.

121443967 is a deficient number, since it is larger than the sum of its proper divisors (4743233).

121443967 is a wasteful number, since it uses less digits than its factorization.

121443967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18545.

The product of its digits is 36288, while the sum is 37.

The square root of 121443967 is about 11020.1618409169. The cubic root of 121443967 is about 495.2129369891.

The spelling of 121443967 in words is "one hundred twenty-one million, four hundred forty-three thousand, nine hundred sixty-seven".