342121739 has 2 divisors, whose sum is σ = 342121740. Its totient is φ = 342121738.

The previous prime is 342121687. The next prime is 342121763. The reversal of 342121739 is 937121243.

342121739 is nontrivially palindromic in base 6.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342121739 is a prime.

It is not a weakly prime, because it can be changed into another prime (342121799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171060869 + 171060870.

It is an arithmetic number, because the mean of its divisors is an integer number (171060870).

Almost surely, 2^342121739 is an apocalyptic number.

342121739 is a deficient number, since it is larger than the sum of its proper divisors (1).

342121739 is an equidigital number, since it uses as much as digits as its factorization.

342121739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 32.

The square root of 342121739 is about 18496.5331616495. The cubic root of 342121739 is about 699.4020328762.

The spelling of 342121739 in words is "three hundred forty-two million, one hundred twenty-one thousand, seven hundred thirty-nine".