1404128945 has 4 divisors (see below), whose sum is σ = 1684954740. Its totient is φ = 1123303152.

The previous prime is 1404128941. The next prime is 1404128951. The reversal of 1404128945 is 5498214041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 764190736 + 639938209 = 27644^2 + 25297^2 .

It is a cyclic number.

It is not a de Polignac number, because 1404128945 - 2² = 1404128941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1404128899 and 1404128908.

It is not an unprimeable number, because it can be changed into a prime (1404128941) 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, 140412890 + ... + 140412899.

It is an arithmetic number, because the mean of its divisors is an integer number (421238685).

Almost surely, 2^1404128945 is an apocalyptic number.

It is an amenable number.

1404128945 is a deficient number, since it is larger than the sum of its proper divisors (280825795).

1404128945 is an equidigital number, since it uses as much as digits as its factorization.

1404128945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280825794.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 1404128945 is about 37471.7085946184. The cubic root of 1404128945 is about 1119.7876258143.

The spelling of 1404128945 in words is "one billion, four hundred four million, one hundred twenty-eight thousand, nine hundred forty-five".