120421564 has 12 divisors (see below), whose sum is σ = 214192888. Its totient is φ = 59223600.

The previous prime is 120421549. The next prime is 120421571. The reversal of 120421564 is 465124021.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 246522 + ... + 247009.

Almost surely, 2^120421564 is an apocalyptic number.

It is an amenable number.

120421564 is a deficient number, since it is larger than the sum of its proper divisors (93771324).

120421564 is a wasteful number, since it uses less digits than its factorization.

120421564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493596 (or 493594 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 120421564 is about 10973.6759565790. The cubic root of 120421564 is about 493.8193321643.

Adding to 120421564 its reverse (465124021), we get a palindrome (585545585).

The spelling of 120421564 in words is "one hundred twenty million, four hundred twenty-one thousand, five hundred sixty-four".