1304221240 has 48 divisors (see below), whose sum is σ = 3413604600. Its totient is φ = 447160896.

The previous prime is 1304221229. The next prime is 1304221241. The reversal of 1304221240 is 421224031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304221241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 330750 + ... + 334669.

Almost surely, 2^1304221240 is an apocalyptic number.

1304221240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304221240 is an abundant number, since it is smaller than the sum of its proper divisors (2109383360).

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

1304221240 is a wasteful number, since it uses less digits than its factorization.

1304221240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665444 (or 665433 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1304221240 is about 36114.0033781911. The cubic root of 1304221240 is about 1092.5728968459.

Adding to 1304221240 its reverse (421224031), we get a palindrome (1725445271).

The spelling of 1304221240 in words is "one billion, three hundred four million, two hundred twenty-one thousand, two hundred forty".