1422205405 has 4 divisors (see below), whose sum is σ = 1706646492. Its totient is φ = 1137764320.

The previous prime is 1422205403. The next prime is 1422205427. The reversal of 1422205405 is 5045022241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5045022241 = 7 ⋅720717463.

It can be written as a sum of positive squares in 2 ways, for example, as 854860644 + 567344761 = 29238^2 + 23819^2 .

It is not a de Polignac number, because 1422205405 - 2¹ = 1422205403 is a prime.

It is a super-2 number, since 2×1422205405² = 4045336428022428050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1422205405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422205403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142220536 + ... + 142220545.

It is an arithmetic number, because the mean of its divisors is an integer number (426661623).

Almost surely, 2^1422205405 is an apocalyptic number.

It is an amenable number.

1422205405 is a deficient number, since it is larger than the sum of its proper divisors (284441087).

1422205405 is an equidigital number, since it uses as much as digits as its factorization.

1422205405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284441086.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1422205405 is about 37712.1386956508. The cubic root of 1422205405 is about 1124.5724544907.

Adding to 1422205405 its reverse (5045022241), we get a palindrome (6467227646).

The spelling of 1422205405 in words is "one billion, four hundred twenty-two million, two hundred five thousand, four hundred five".