121620382 has 16 divisors (see below), whose sum is σ = 197169840. Its totient is φ = 55930752.

The previous prime is 121620379. The next prime is 121620419. The reversal of 121620382 is 283026121.

It is a congruent 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 in 7 ways as a sum of consecutive naturals, for example, 907 + ... + 15622.

It is an arithmetic number, because the mean of its divisors is an integer number (12323115).

Almost surely, 2^121620382 is an apocalyptic number.

121620382 is a deficient number, since it is larger than the sum of its proper divisors (75549458).

121620382 is a wasteful number, since it uses less digits than its factorization.

121620382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16827.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 121620382 is about 11028.1631290075. The cubic root of 121620382 is about 495.4526105441.

The spelling of 121620382 in words is "one hundred twenty-one million, six hundred twenty thousand, three hundred eighty-two".