102740047 has 2 divisors, whose sum is σ = 102740048. Its totient is φ = 102740046.

The previous prime is 102740039. The next prime is 102740081. The reversal of 102740047 is 740047201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102740047 - 2³ = 102740039 is a prime.

It is equal to p_5910235 and since 102740047 and 5910235 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102740147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51370023 + 51370024.

It is an arithmetic number, because the mean of its divisors is an integer number (51370024).

Almost surely, 2^102740047 is an apocalyptic number.

102740047 is a deficient number, since it is larger than the sum of its proper divisors (1).

102740047 is an equidigital number, since it uses as much as digits as its factorization.

102740047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 102740047 is about 10136.0765091824. The cubic root of 102740047 is about 468.3601323160.

Adding to 102740047 its reverse (740047201), we get a palindrome (842787248).

The spelling of 102740047 in words is "one hundred two million, seven hundred forty thousand, forty-seven".