422342405 has 4 divisors (see below), whose sum is σ = 506810892. Its totient is φ = 337873920.

The previous prime is 422342381. The next prime is 422342411. The reversal of 422342405 is 504243224.

It is a happy number.

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 187854436 + 234487969 = 13706^2 + 15313^2 .

It is not a de Polignac number, because 422342405 - 2⁸ = 422342149 is a prime.

It is a super-2 number, since 2×422342405² = 356746214122368050, which contains 22 as substring.

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, 42234236 + ... + 42234245.

It is an arithmetic number, because the mean of its divisors is an integer number (126702723).

Almost surely, 2^422342405 is an apocalyptic number.

It is an amenable number.

422342405 is a deficient number, since it is larger than the sum of its proper divisors (84468487).

422342405 is an equidigital number, since it uses as much as digits as its factorization.

422342405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84468486.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 422342405 is about 20550.9709016387. The cubic root of 422342405 is about 750.2768785125.

Adding to 422342405 its reverse (504243224), we get a palindrome (926585629).

The spelling of 422342405 in words is "four hundred twenty-two million, three hundred forty-two thousand, four hundred five".