120405444 has 24 divisors (see below), whose sum is σ = 284333280. Its totient is φ = 39651264.

The previous prime is 120405427. The next prime is 120405449. The reversal of 120405444 is 444504021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (120405449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59449 + ... + 61440.

It is an arithmetic number, because the mean of its divisors is an integer number (11847220).

Almost surely, 2^120405444 is an apocalyptic number.

It is an amenable number.

120405444 is an abundant number, since it is smaller than the sum of its proper divisors (163927836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120405444 is a wasteful number, since it uses less digits than its factorization.

120405444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120979 (or 120977 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 120405444 is about 10972.9414470323. The cubic root of 120405444 is about 493.7972964574.

Adding to 120405444 its reverse (444504021), we get a palindrome (564909465).

The spelling of 120405444 in words is "one hundred twenty million, four hundred five thousand, four hundred forty-four".