120421166 has 16 divisors (see below), whose sum is σ = 197853840. Its totient is φ = 54714240.

The previous prime is 120421159. The next prime is 120421181. The reversal of 120421166 is 661124021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60080 + ... + 62051.

It is an arithmetic number, because the mean of its divisors is an integer number (12365865).

Almost surely, 2^120421166 is an apocalyptic number.

120421166 is a deficient number, since it is larger than the sum of its proper divisors (77432674).

120421166 is a wasteful number, since it uses less digits than its factorization.

120421166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122179.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 120421166 is about 10973.6578222578. The cubic root of 120421166 is about 493.8187881302.

Adding to 120421166 its reverse (661124021), we get a palindrome (781545187).

The spelling of 120421166 in words is "one hundred twenty million, four hundred twenty-one thousand, one hundred sixty-six".