1421404135 has 4 divisors (see below), whose sum is σ = 1705684968. Its totient is φ = 1137123304.

The previous prime is 1421404109. The next prime is 1421404169. The reversal of 1421404135 is 5314041241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421404135 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 3 ways as a sum of consecutive naturals, for example, 142140409 + ... + 142140418.

It is an arithmetic number, because the mean of its divisors is an integer number (426421242).

Almost surely, 2^1421404135 is an apocalyptic number.

1421404135 is a deficient number, since it is larger than the sum of its proper divisors (284280833).

1421404135 is an equidigital number, since it uses as much as digits as its factorization.

1421404135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284280832.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1421404135 is about 37701.5136964022. The cubic root of 1421404135 is about 1124.3612202475.

Adding to 1421404135 its reverse (5314041241), we get a palindrome (6735445376).

The spelling of 1421404135 in words is "one billion, four hundred twenty-one million, four hundred four thousand, one hundred thirty-five".