343126421 has 8 divisors (see below), whose sum is σ = 377633664. Its totient is φ = 309171520.

The previous prime is 343126409. The next prime is 343126429. The reversal of 343126421 is 124621343.

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 343126421 - 2¹⁰ = 343125397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343126429) 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, 136781 + ... + 139266.

It is an arithmetic number, because the mean of its divisors is an integer number (47204208).

Almost surely, 2^343126421 is an apocalyptic number.

It is an amenable number.

343126421 is a deficient number, since it is larger than the sum of its proper divisors (34507243).

343126421 is a wasteful number, since it uses less digits than its factorization.

343126421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276171.

The product of its digits is 3456, while the sum is 26.

The square root of 343126421 is about 18523.6719092085. The cubic root of 343126421 is about 700.0859901166.

Adding to 343126421 its reverse (124621343), we get a palindrome (467747764).

The spelling of 343126421 in words is "three hundred forty-three million, one hundred twenty-six thousand, four hundred twenty-one".