1304025421 has 8 divisors (see below), whose sum is σ = 1310047200. Its totient is φ = 1298013648.

The previous prime is 1304025407. The next prime is 1304025431. The reversal of 1304025421 is 1245204031.

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

It is a cyclic number.

It is not a de Polignac number, because 1304025421 - 2⁵ = 1304025389 is a prime.

It is a super-2 number, since 2×1304025421² = 3400964597228454482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1304025392 and 1304025401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304025431) 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, 393630 + ... + 396928.

It is an arithmetic number, because the mean of its divisors is an integer number (163755900).

Almost surely, 2^1304025421 is an apocalyptic number.

It is an amenable number.

1304025421 is a deficient number, since it is larger than the sum of its proper divisors (6021779).

1304025421 is a wasteful number, since it uses less digits than its factorization.

1304025421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5003.

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

The square root of 1304025421 is about 36111.2921535633. The cubic root of 1304025421 is about 1092.5182135775.

Adding to 1304025421 its reverse (1245204031), we get a palindrome (2549229452).

The spelling of 1304025421 in words is "one billion, three hundred four million, twenty-five thousand, four hundred twenty-one".