121670378 has 8 divisors (see below), whose sum is σ = 184180260. Its totient is φ = 60276960.

The previous prime is 121670371. The next prime is 121670383. The reversal of 121670378 is 873076121.

It can be written as a sum of positive squares in 2 ways, for example, as 119399329 + 2271049 = 10927^2 + 1507^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (121670371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278843 + ... + 279278.

Almost surely, 2^121670378 is an apocalyptic number.

121670378 is a deficient number, since it is larger than the sum of its proper divisors (62509882).

121670378 is a wasteful number, since it uses less digits than its factorization.

121670378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558232.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 121670378 is about 11030.4296380513. The cubic root of 121670378 is about 495.5204918614.

The spelling of 121670378 in words is "one hundred twenty-one million, six hundred seventy thousand, three hundred seventy-eight".