121671416 has 16 divisors (see below), whose sum is σ = 228387600. Its totient is φ = 60768064.

The previous prime is 121671409. The next prime is 121671479. The reversal of 121671416 is 614176121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356 + ... + 15603.

It is an arithmetic number, because the mean of its divisors is an integer number (14274225).

Almost surely, 2^121671416 is an apocalyptic number.

It is an amenable number.

121671416 is a deficient number, since it is larger than the sum of its proper divisors (106716184).

121671416 is a wasteful number, since it uses less digits than its factorization.

121671416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16918 (or 16914 counting only the distinct ones).

The product of its digits is 2016, while the sum is 29.

The square root of 121671416 is about 11030.4766896087. The cubic root of 121671416 is about 495.5219009932.

The spelling of 121671416 in words is "one hundred twenty-one million, six hundred seventy-one thousand, four hundred sixteen".