1304211405 has 16 divisors (see below), whose sum is σ = 2384843904. Its totient is φ = 596210880.

The previous prime is 1304211401. The next prime is 1304211427. The reversal of 1304211405 is 5041124031.

It is not a de Polignac number, because 1304211405 - 2² = 1304211401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304211401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6210426 + ... + 6210635.

It is an arithmetic number, because the mean of its divisors is an integer number (149052744).

Almost surely, 2^1304211405 is an apocalyptic number.

1304211405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1304211405 is a deficient number, since it is larger than the sum of its proper divisors (1080632499).

1304211405 is a wasteful number, since it uses less digits than its factorization.

1304211405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12421076.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1304211405 is about 36113.8672119174. The cubic root of 1304211405 is about 1092.5701505119.

Adding to 1304211405 its reverse (5041124031), we get a palindrome (6345335436).

The spelling of 1304211405 in words is "one billion, three hundred four million, two hundred eleven thousand, four hundred five".