1304632121 has 8 divisors (see below), whose sum is σ = 1417423560. Its totient is φ = 1193617152.

The previous prime is 1304632111. The next prime is 1304632123. The reversal of 1304632121 is 1212364031.

It can be written as a sum of positive squares in 4 ways, for example, as 4020025 + 1300612096 = 2005^2 + 36064^2 .

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

It is not a de Polignac number, because 1304632121 - 2¹⁴ = 1304615737 is a prime.

It is a super-2 number, since 2×1304632121² = 3404129942289917282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1304632123) 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, 442586 + ... + 445523.

It is an arithmetic number, because the mean of its divisors is an integer number (177177945).

Almost surely, 2^1304632121 is an apocalyptic number.

It is an amenable number.

1304632121 is a deficient number, since it is larger than the sum of its proper divisors (112791439).

1304632121 is a wasteful number, since it uses less digits than its factorization.

1304632121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888235.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1304632121 is about 36119.6915961363. The cubic root of 1304632121 is about 1092.6876192812.

Adding to 1304632121 its reverse (1212364031), we get a palindrome (2516996152).

The spelling of 1304632121 in words is "one billion, three hundred four million, six hundred thirty-two thousand, one hundred twenty-one".