207142658 has 6 divisors (see below), whose sum is σ = 310744521. Its totient is φ = 103561152.

The previous prime is 207142657. The next prime is 207142667. The reversal of 207142658 is 856241702.

It can be written as a sum of positive squares in 2 ways, for example, as 201838849 + 5303809 = 14207^2 + 2303^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=10177.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (207142657) 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 in 2 ways as a sum of consecutive naturals, for example, 15266 + ... + 25442.

Almost surely, 2^207142658 is an apocalyptic number.

207142658 is a deficient number, since it is larger than the sum of its proper divisors (103601863).

207142658 is an frugal number, since it uses more digits than its factorization.

207142658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20356 (or 10179 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 207142658 is about 14392.4514242710. The cubic root of 207142658 is about 591.6840310009.

The spelling of 207142658 in words is "two hundred seven million, one hundred forty-two thousand, six hundred fifty-eight".