121966258 has 4 divisors (see below), whose sum is σ = 182949390. Its totient is φ = 60983128.

The previous prime is 121966253. The next prime is 121966261. The reversal of 121966258 is 852669121.

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

It can be written as a sum of positive squares in only one way, i.e., 111872929 + 10093329 = 10577^2 + 3177^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 121966258.

It is not an unprimeable number, because it can be changed into a prime (121966253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30491563 + ... + 30491566.

Almost surely, 2^121966258 is an apocalyptic number.

121966258 is a deficient number, since it is larger than the sum of its proper divisors (60983132).

121966258 is an equidigital number, since it uses as much as digits as its factorization.

121966258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60983131.

The product of its digits is 51840, while the sum is 40.

The square root of 121966258 is about 11043.8334829895. The cubic root of 121966258 is about 495.9218382949.

The spelling of 121966258 in words is "one hundred twenty-one million, nine hundred sixty-six thousand, two hundred fifty-eight".