207142657 has 2 divisors, whose sum is σ = 207142658. Its totient is φ = 207142656.

The previous prime is 207142601. The next prime is 207142667. The reversal of 207142657 is 756241702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173606976 + 33535681 = 13176^2 + 5791^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-207142657 is a prime.

It is not a weakly prime, because it can be changed into another prime (207142667) 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, 103571328 + 103571329.

It is an arithmetic number, because the mean of its divisors is an integer number (103571329).

Almost surely, 2^207142657 is an apocalyptic number.

It is an amenable number.

207142657 is a deficient number, since it is larger than the sum of its proper divisors (1).

207142657 is an equidigital number, since it uses as much as digits as its factorization.

207142657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 207142657 is about 14392.4513895306. The cubic root of 207142657 is about 591.6840300488.

The spelling of 207142657 in words is "two hundred seven million, one hundred forty-two thousand, six hundred fifty-seven".