120009986 has 8 divisors (see below), whose sum is σ = 180486144. Its totient is φ = 59847940.

The previous prime is 120009983. The next prime is 120009991. The reversal of 120009986 is 689900021.

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 (120009983) 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, 77570 + ... + 79101.

It is an arithmetic number, because the mean of its divisors is an integer number (22560768).

Almost surely, 2^120009986 is an apocalyptic number.

120009986 is a deficient number, since it is larger than the sum of its proper divisors (60476158).

120009986 is a wasteful number, since it uses less digits than its factorization.

120009986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157056.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 120009986 is about 10954.9069370762. The cubic root of 120009986 is about 493.2560964831.

Adding to 120009986 its sum of digits (35), we get a palindrome (120010021).

The spelling of 120009986 in words is "one hundred twenty million, nine thousand, nine hundred eighty-six".