102740747 has 4 divisors (see below), whose sum is σ = 107207760. Its totient is φ = 98273736.

The previous prime is 102740723. The next prime is 102740773. The reversal of 102740747 is 747047201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 747047201 = 17 ⋅43943953.

It is a cyclic number.

It is not a de Polignac number, because 102740747 - 2⁶ = 102740683 is a prime.

It is a super-2 number, since 2×102740747² = 21111322188236018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102740777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2233472 + ... + 2233517.

It is an arithmetic number, because the mean of its divisors is an integer number (26801940).

Almost surely, 2^102740747 is an apocalyptic number.

102740747 is a deficient number, since it is larger than the sum of its proper divisors (4467013).

102740747 is an equidigital number, since it uses as much as digits as its factorization.

102740747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4467012.

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 102740747 is about 10136.1110392497. Note that the first 3 decimals coincide. The cubic root of 102740747 is about 468.3611960081.

Adding to 102740747 its reverse (747047201), we get a palindrome (849787948).

The spelling of 102740747 in words is "one hundred two million, seven hundred forty thousand, seven hundred forty-seven".