342421969 has 2 divisors, whose sum is σ = 342421970. Its totient is φ = 342421968.

The previous prime is 342421957. The next prime is 342421991. The reversal of 342421969 is 969124243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 336355600 + 6066369 = 18340^2 + 2463^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342421969 is a prime.

It is a super-2 number, since 2×342421969² = 234505609707673922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (342421069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171210984 + 171210985.

It is an arithmetic number, because the mean of its divisors is an integer number (171210985).

Almost surely, 2^342421969 is an apocalyptic number.

It is an amenable number.

342421969 is a deficient number, since it is larger than the sum of its proper divisors (1).

342421969 is an equidigital number, since it uses as much as digits as its factorization.

342421969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 40.

The square root of 342421969 is about 18504.6472271157. The cubic root of 342421969 is about 699.6065605389.

The spelling of 342421969 in words is "three hundred forty-two million, four hundred twenty-one thousand, nine hundred sixty-nine".