121679854 has 4 divisors (see below), whose sum is σ = 182519784. Its totient is φ = 60839926.

The previous prime is 121679783. The next prime is 121679893. The reversal of 121679854 is 458976121.

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

It is a super-2 number, since 2×121679854² = 29611973738922632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121679854.

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, 30419962 + ... + 30419965.

It is an arithmetic number, because the mean of its divisors is an integer number (45629946).

Almost surely, 2^121679854 is an apocalyptic number.

121679854 is a deficient number, since it is larger than the sum of its proper divisors (60839930).

121679854 is an equidigital number, since it uses as much as digits as its factorization.

121679854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60839929.

The product of its digits is 120960, while the sum is 43.

The square root of 121679854 is about 11030.8591687139. The cubic root of 121679854 is about 495.5333556615.

The spelling of 121679854 in words is "one hundred twenty-one million, six hundred seventy-nine thousand, eight hundred fifty-four".