1214020405 has 32 divisors (see below), whose sum is σ = 1664409600. Its totient is φ = 842130432.

The previous prime is 1214020399. The next prime is 1214020421. The reversal of 1214020405 is 5040204121.

It is not a de Polignac number, because 1214020405 - 2⁷ = 1214020277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 948556 + ... + 949834.

It is an arithmetic number, because the mean of its divisors is an integer number (52012800).

Almost surely, 2^1214020405 is an apocalyptic number.

It is an amenable number.

1214020405 is a deficient number, since it is larger than the sum of its proper divisors (450389195).

1214020405 is a wasteful number, since it uses less digits than its factorization.

1214020405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1214020405 is about 34842.7955967945. The cubic root of 1214020405 is about 1066.7811393530.

Adding to 1214020405 its reverse (5040204121), we get a palindrome (6254224526).

The spelling of 1214020405 in words is "one billion, two hundred fourteen million, twenty thousand, four hundred five".