1422136405 has 4 divisors (see below), whose sum is σ = 1706563692. Its totient is φ = 1137709120.

The previous prime is 1422136399. The next prime is 1422136511. The reversal of 1422136405 is 5046312241.

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

It can be written as a sum of positive squares in 2 ways, for example, as 433222596 + 988913809 = 20814^2 + 31447^2 .

It is not a de Polignac number, because 1422136405 - 2¹⁵ = 1422103637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142213636 + ... + 142213645.

It is an arithmetic number, because the mean of its divisors is an integer number (426640923).

Almost surely, 2^1422136405 is an apocalyptic number.

It is an amenable number.

1422136405 is a deficient number, since it is larger than the sum of its proper divisors (284427287).

1422136405 is an equidigital number, since it uses as much as digits as its factorization.

1422136405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284427286.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1422136405 is about 37711.2238597476. The cubic root of 1422136405 is about 1124.5542675364.

Adding to 1422136405 its reverse (5046312241), we get a palindrome (6468448646).

The spelling of 1422136405 in words is "one billion, four hundred twenty-two million, one hundred thirty-six thousand, four hundred five".