120400066 has 8 divisors (see below), whose sum is σ = 180690444. Its totient is φ = 60169920.

The previous prime is 120400051. The next prime is 120400073. The reversal of 120400066 is 660004021.

It can be written as a sum of positive squares in 2 ways, for example, as 102515625 + 17884441 = 10125^2 + 4229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9675 + ... + 18286.

Almost surely, 2^120400066 is an apocalyptic number.

120400066 is a deficient number, since it is larger than the sum of its proper divisors (60290378).

120400066 is a wasteful number, since it uses less digits than its factorization.

120400066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30116.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 120400066 is about 10972.6963869415. The cubic root of 120400066 is about 493.7899444050.

Adding to 120400066 its reverse (660004021), we get a palindrome (780404087).

The spelling of 120400066 in words is "one hundred twenty million, four hundred thousand, sixty-six".