340420433 has 8 divisors (see below), whose sum is σ = 348081888. Its totient is φ = 332843904.

The previous prime is 340420429. The next prime is 340420439. The reversal of 340420433 is 334024043.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 340420433 - 2² = 340420429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340420399 and 340420408.

It is not an unprimeable number, because it can be changed into a prime (340420439) 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, 13091 + ... + 29192.

It is an arithmetic number, because the mean of its divisors is an integer number (43510236).

Almost surely, 2^340420433 is an apocalyptic number.

It is an amenable number.

340420433 is a deficient number, since it is larger than the sum of its proper divisors (7661455).

340420433 is an equidigital number, since it uses as much as digits as its factorization.

340420433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42463.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 340420433 is about 18450.4859827594. The cubic root of 340420433 is about 698.2407749741.

Adding to 340420433 its reverse (334024043), we get a palindrome (674444476).

The spelling of 340420433 in words is "three hundred forty million, four hundred twenty thousand, four hundred thirty-three".