1307421605 has 16 divisors (see below), whose sum is σ = 1817601024. Its totient is φ = 884234880.

The previous prime is 1307421589. The next prime is 1307421611. The reversal of 1307421605 is 5061247031.

It is not a de Polignac number, because 1307421605 - 2⁴ = 1307421589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253301 + ... + 258410.

It is an arithmetic number, because the mean of its divisors is an integer number (113600064).

Almost surely, 2^1307421605 is an apocalyptic number.

It is an amenable number.

1307421605 is a deficient number, since it is larger than the sum of its proper divisors (510179419).

1307421605 is an equidigital number, since it uses as much as digits as its factorization.

1307421605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511796.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 1307421605 is about 36158.2854267179. The cubic root of 1307421605 is about 1093.4658373412.

Adding to 1307421605 its reverse (5061247031), we get a palindrome (6368668636).

The spelling of 1307421605 in words is "one billion, three hundred seven million, four hundred twenty-one thousand, six hundred five".