342082921 has 2 divisors, whose sum is σ = 342082922. Its totient is φ = 342082920.

The previous prime is 342082919. The next prime is 342082943. The reversal of 342082921 is 129280243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179265321 + 162817600 = 13389^2 + 12760^2 .

It is a cyclic number.

It is not a de Polignac number, because 342082921 - 2¹ = 342082919 is a prime.

Together with 342082919, it forms a pair of twin primes.

It is equal to p_18400864 and since 342082921 and 18400864 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (342082901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171041460 + 171041461.

It is an arithmetic number, because the mean of its divisors is an integer number (171041461).

Almost surely, 2^342082921 is an apocalyptic number.

It is an amenable number.

342082921 is a deficient number, since it is larger than the sum of its proper divisors (1).

342082921 is an equidigital number, since it uses as much as digits as its factorization.

342082921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 342082921 is about 18495.4838001064. The cubic root of 342082921 is about 699.3755798997.

The spelling of 342082921 in words is "three hundred forty-two million, eighty-two thousand, nine hundred twenty-one".