120400443 has 12 divisors (see below), whose sum is σ = 184142088. Its totient is φ = 75545280.

The previous prime is 120400429. The next prime is 120400447. The reversal of 120400443 is 344004021.

It is not a de Polignac number, because 120400443 - 2⁵ = 120400411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120400447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 393313 + ... + 393618.

It is an arithmetic number, because the mean of its divisors is an integer number (15345174).

Almost surely, 2^120400443 is an apocalyptic number.

120400443 is a deficient number, since it is larger than the sum of its proper divisors (63741645).

120400443 is a wasteful number, since it uses less digits than its factorization.

120400443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786954 (or 786951 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 120400443 is about 10972.7135659325. The cubic root of 120400443 is about 493.7904597940.

Adding to 120400443 its reverse (344004021), we get a palindrome (464404464).

The spelling of 120400443 in words is "one hundred twenty million, four hundred thousand, four hundred forty-three".