8734142257 has 2 divisors, whose sum is σ = 8734142258. Its totient is φ = 8734142256.

The previous prime is 8734142147. The next prime is 8734142279. The reversal of 8734142257 is 7522414378.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5739426081 + 2994716176 = 75759^2 + 54724^2 .

It is a cyclic number.

It is not a de Polignac number, because 8734142257 - 2¹¹ = 8734140209 is a prime.

It is not a weakly prime, because it can be changed into another prime (8734142297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4367071128 + 4367071129.

It is an arithmetic number, because the mean of its divisors is an integer number (4367071129).

Almost surely, 2^8734142257 is an apocalyptic number.

It is an amenable number.

8734142257 is a deficient number, since it is larger than the sum of its proper divisors (1).

8734142257 is an equidigital number, since it uses as much as digits as its factorization.

8734142257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 43.

The square root of 8734142257 is about 93456.6330283731. The cubic root of 8734142257 is about 2059.3970536428.

The spelling of 8734142257 in words is "eight billion, seven hundred thirty-four million, one hundred forty-two thousand, two hundred fifty-seven".