121364378 has 4 divisors (see below), whose sum is σ = 182046570. Its totient is φ = 60682188.

The previous prime is 121364359. The next prime is 121364389. The reversal of 121364378 is 873463121.

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., 92987449 + 28376929 = 9643^2 + 5327^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30341093 + ... + 30341096.

Almost surely, 2^121364378 is an apocalyptic number.

121364378 is a deficient number, since it is larger than the sum of its proper divisors (60682192).

121364378 is an equidigital number, since it uses as much as digits as its factorization.

121364378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60682191.

The product of its digits is 24192, while the sum is 35.

The square root of 121364378 is about 11016.5501859702. The cubic root of 121364378 is about 495.1047331359.

The spelling of 121364378 in words is "one hundred twenty-one million, three hundred sixty-four thousand, three hundred seventy-eight".