1440120404 has 6 divisors (see below), whose sum is σ = 2520210714. Its totient is φ = 720060200.

The previous prime is 1440120403. The next prime is 1440120431. The reversal of 1440120404 is 4040210441.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1210900804 + 229219600 = 34798^2 + 15140^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440120403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180015047 + ... + 180015054.

It is an arithmetic number, because the mean of its divisors is an integer number (420035119).

Almost surely, 2^1440120404 is an apocalyptic number.

It is an amenable number.

1440120404 is a deficient number, since it is larger than the sum of its proper divisors (1080090310).

1440120404 is a wasteful number, since it uses less digits than its factorization.

1440120404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360030105 (or 360030103 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1440120404 is about 37948.9183508569. The cubic root of 1440120404 is about 1129.2747072529.

Adding to 1440120404 its reverse (4040210441), we get a palindrome (5480330845).

The spelling of 1440120404 in words is "one billion, four hundred forty million, one hundred twenty thousand, four hundred four".