121893874 has 4 divisors (see below), whose sum is σ = 182840814. Its totient is φ = 60946936.

The previous prime is 121893869. The next prime is 121893899. The reversal of 121893874 is 478398121.

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., 64240225 + 57653649 = 8015^2 + 7593^2 .

It is a super-3 number, since 3×121893874³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121893874.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30473467 + ... + 30473470.

Almost surely, 2^121893874 is an apocalyptic number.

121893874 is a deficient number, since it is larger than the sum of its proper divisors (60946940).

121893874 is an equidigital number, since it uses as much as digits as its factorization.

121893874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60946939.

The product of its digits is 96768, while the sum is 43.

The square root of 121893874 is about 11040.5558736868. Note that the first 3 decimals coincide. The cubic root of 121893874 is about 495.8237130414.

The spelling of 121893874 in words is "one hundred twenty-one million, eight hundred ninety-three thousand, eight hundred seventy-four".