342400405 has 32 divisors (see below), whose sum is σ = 439686144. Its totient is φ = 255580416.

The previous prime is 342400393. The next prime is 342400427. The reversal of 342400405 is 504004243.

It is a happy number.

It is not a de Polignac number, because 342400405 - 2⁷ = 342400277 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 31 ways as a sum of consecutive naturals, for example, 460464 + ... + 461206.

It is an arithmetic number, because the mean of its divisors is an integer number (13740192).

Almost surely, 2^342400405 is an apocalyptic number.

It is an amenable number.

342400405 is a deficient number, since it is larger than the sum of its proper divisors (97285739).

342400405 is a wasteful number, since it uses less digits than its factorization.

342400405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 342400405 is about 18504.0645534974. The cubic root of 342400405 is about 699.5918743389.

Adding to 342400405 its reverse (504004243), we get a palindrome (846404648).

The spelling of 342400405 in words is "three hundred forty-two million, four hundred thousand, four hundred five".