342637489 has 2 divisors, whose sum is σ = 342637490. Its totient is φ = 342637488.

The previous prime is 342637453. The next prime is 342637511. The reversal of 342637489 is 984736243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 338854464 + 3783025 = 18408^2 + 1945^2 .

It is an emirp because it is prime and its reverse (984736243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 342637489 - 2¹¹ = 342635441 is a prime.

It is not a weakly prime, because it can be changed into another prime (342637289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171318744 + 171318745.

It is an arithmetic number, because the mean of its divisors is an integer number (171318745).

Almost surely, 2^342637489 is an apocalyptic number.

It is an amenable number.

342637489 is a deficient number, since it is larger than the sum of its proper divisors (1).

342637489 is an equidigital number, since it uses as much as digits as its factorization.

342637489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 46.

The square root of 342637489 is about 18510.4697131110. The cubic root of 342637489 is about 699.7533069485.

The spelling of 342637489 in words is "three hundred forty-two million, six hundred thirty-seven thousand, four hundred eighty-nine".