207742087 has 16 divisors (see below), whose sum is σ = 246379840. Its totient is φ = 171445248.

The previous prime is 207742079. The next prime is 207742103. The reversal of 207742087 is 780247702.

It is a cyclic number.

It is not a de Polignac number, because 207742087 - 2³ = 207742079 is a prime.

It is a super-2 number, since 2×207742087² = 86313549422231138, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207742387) 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 15 ways as a sum of consecutive naturals, for example, 20989 + ... + 29257.

It is an arithmetic number, because the mean of its divisors is an integer number (15398740).

Almost surely, 2^207742087 is an apocalyptic number.

207742087 is the 8322-nd hex number.

207742087 is a deficient number, since it is larger than the sum of its proper divisors (38637753).

207742087 is an equidigital number, since it uses as much as digits as its factorization.

207742087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8410.

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 207742087 is about 14413.2608038570. The cubic root of 207742087 is about 592.2542193636.

Adding to 207742087 its reverse (780247702), we get a palindrome (987989789).

The spelling of 207742087 in words is "two hundred seven million, seven hundred forty-two thousand, eighty-seven".