121679894 has 16 divisors (see below), whose sum is σ = 208832256. Its totient is φ = 52089000.

The previous prime is 121679893. The next prime is 121679917. The reversal of 121679894 is 498976121.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121679893) 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, 9119 + ... + 18069.

It is an arithmetic number, because the mean of its divisors is an integer number (13052016).

Almost surely, 2^121679894 is an apocalyptic number.

121679894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121679894 is a deficient number, since it is larger than the sum of its proper divisors (87152362).

121679894 is an equidigital number, since it uses as much as digits as its factorization.

121679894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9931.

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

The square root of 121679894 is about 11030.8609818092. The cubic root of 121679894 is about 495.5334099607.

The spelling of 121679894 in words is "one hundred twenty-one million, six hundred seventy-nine thousand, eight hundred ninety-four".