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342000257 is a prime number
BaseRepresentation
bin10100011000101…
…000001010000001
3212211112102011012
4110120220022001
51200023002012
653534130305
711321645204
oct2430501201
9784472135
10342000257
11166060945
1296650995
1355b14c21
14335c793b
1520058622
hex14628281

342000257 has 2 divisors, whose sum is σ = 342000258. Its totient is φ = 342000256.

The previous prime is 342000193. The next prime is 342000283. The reversal of 342000257 is 752000243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 332661121 + 9339136 = 18239^2 + 3056^2 .

It is an emirp because it is prime and its reverse (752000243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 342000257 - 26 = 342000193 is a prime.

It is not a weakly prime, because it can be changed into another prime (342002257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171000128 + 171000129.

It is an arithmetic number, because the mean of its divisors is an integer number (171000129).

Almost surely, 2342000257 is an apocalyptic number.

It is an amenable number.

342000257 is a deficient number, since it is larger than the sum of its proper divisors (1).

342000257 is an equidigital number, since it uses as much as digits as its factorization.

342000257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 342000257 is about 18493.2489573898. The cubic root of 342000257 is about 699.3192408886.

The spelling of 342000257 in words is "three hundred forty-two million, two hundred fifty-seven", and thus it is an aban number.