340420404 has 24 divisors (see below), whose sum is σ = 798910560. Its totient is φ = 112816864.

The previous prime is 340420403. The next prime is 340420411. The reversal of 340420404 is 404024043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340420403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79914 + ... + 84065.

It is an arithmetic number, because the mean of its divisors is an integer number (33287940).

Almost surely, 2^340420404 is an apocalyptic number.

It is an amenable number.

340420404 is an abundant number, since it is smaller than the sum of its proper divisors (458490156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

340420404 is a wasteful number, since it uses less digits than its factorization.

340420404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164159 (or 164157 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 340420404 is about 18450.4851968722. The cubic root of 340420404 is about 698.2407551467.

Adding to 340420404 its reverse (404024043), we get a palindrome (744444447).

The spelling of 340420404 in words is "three hundred forty million, four hundred twenty thousand, four hundred four".