340424421 has 8 divisors (see below), whose sum is σ = 464455200. Its totient is φ = 221671632.

The previous prime is 340424419. The next prime is 340424443. The reversal of 340424421 is 124424043.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 340424421 - 2¹ = 340424419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 340424391 and 340424400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340424411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1319346 + ... + 1319603.

It is an arithmetic number, because the mean of its divisors is an integer number (58056900).

Almost surely, 2^340424421 is an apocalyptic number.

It is an amenable number.

340424421 is a deficient number, since it is larger than the sum of its proper divisors (124030779).

340424421 is a wasteful number, since it uses less digits than its factorization.

340424421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2638995.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 340424421 is about 18450.5940554769. The cubic root of 340424421 is about 698.2435015763.

Adding to 340424421 its reverse (124424043), we get a palindrome (464848464).

The spelling of 340424421 in words is "three hundred forty million, four hundred twenty-four thousand, four hundred twenty-one".