342143421 has 16 divisors (see below), whose sum is σ = 474768000. Its totient is φ = 218902208.

The previous prime is 342143413. The next prime is 342143429. The reversal of 342143421 is 124341243.

It is an interprime number because it is at equal distance from previous prime (342143413) and next prime (342143429).

It is not a de Polignac number, because 342143421 - 2³ = 342143413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 342143391 and 342143400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342143429) 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, 2755 + ... + 26303.

It is an arithmetic number, because the mean of its divisors is an integer number (29673000).

Almost surely, 2^342143421 is an apocalyptic number.

It is an amenable number.

342143421 is a deficient number, since it is larger than the sum of its proper divisors (132624579).

342143421 is a wasteful number, since it uses less digits than its factorization.

342143421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23748.

The product of its digits is 2304, while the sum is 24.

The square root of 342143421 is about 18497.1192621986. The cubic root of 342143421 is about 699.4168074557.

Adding to 342143421 its reverse (124341243), we get a palindrome (466484664).

The spelling of 342143421 in words is "three hundred forty-two million, one hundred forty-three thousand, four hundred twenty-one".