102705739 has 2 divisors, whose sum is σ = 102705740. Its totient is φ = 102705738.

The previous prime is 102705731. The next prime is 102705793. The reversal of 102705739 is 937507201.

Together with next prime (102705793) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (937507201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102705739 - 2³ = 102705731 is a prime.

It is a super-2 number, since 2×102705739² = 21096937647072242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102705731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51352869 + 51352870.

It is an arithmetic number, because the mean of its divisors is an integer number (51352870).

Almost surely, 2^102705739 is an apocalyptic number.

102705739 is a deficient number, since it is larger than the sum of its proper divisors (1).

102705739 is an equidigital number, since it uses as much as digits as its factorization.

102705739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 102705739 is about 10134.3839970666. The cubic root of 102705739 is about 468.3079933211.

The spelling of 102705739 in words is "one hundred two million, seven hundred five thousand, seven hundred thirty-nine".