346442421 has 16 divisors (see below), whose sum is σ = 499640960. Its totient is φ = 212258880.

The previous prime is 346442419. The next prime is 346442501. The reversal of 346442421 is 124244643.

It is not a de Polignac number, because 346442421 - 2¹ = 346442419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346442521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10465 + ... + 28326.

It is an arithmetic number, because the mean of its divisors is an integer number (31227560).

Almost surely, 2^346442421 is an apocalyptic number.

It is an amenable number.

346442421 is a deficient number, since it is larger than the sum of its proper divisors (153198539).

346442421 is a wasteful number, since it uses less digits than its factorization.

346442421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39036.

The product of its digits is 18432, while the sum is 30.

The square root of 346442421 is about 18612.9637887146. The cubic root of 346442421 is about 702.3339921732. Note that the first 3 decimals are identical.

The spelling of 346442421 in words is "three hundred forty-six million, four hundred forty-two thousand, four hundred twenty-one".