1304220145 has 8 divisors (see below), whose sum is σ = 1565533440. Its totient is φ = 1043063280.

The previous prime is 1304220133. The next prime is 1304220157. The reversal of 1304220145 is 5410224031.

It is an interprime number because it is at equal distance from previous prime (1304220133) and next prime (1304220157).

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

It is not a de Polignac number, because 1304220145 - 2⁷ = 1304220017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19905 + ... + 54814.

It is an arithmetic number, because the mean of its divisors is an integer number (195691680).

Almost surely, 2^1304220145 is an apocalyptic number.

It is an amenable number.

1304220145 is a deficient number, since it is larger than the sum of its proper divisors (261313295).

1304220145 is an equidigital number, since it uses as much as digits as its factorization.

1304220145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78215.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1304220145 is about 36113.9882178637. The cubic root of 1304220145 is about 1092.5725910778.

Adding to 1304220145 its reverse (5410224031), we get a palindrome (6714444176).

The spelling of 1304220145 in words is "one billion, three hundred four million, two hundred twenty thousand, one hundred forty-five".