102540307 has 4 divisors (see below), whose sum is σ = 102864096. Its totient is φ = 102216520.

The previous prime is 102540287. The next prime is 102540313. The reversal of 102540307 is 703045201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102540307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102540367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161419 + ... + 162052.

It is an arithmetic number, because the mean of its divisors is an integer number (25716024).

Almost surely, 2^102540307 is an apocalyptic number.

102540307 is a deficient number, since it is larger than the sum of its proper divisors (323789).

102540307 is an equidigital number, since it uses as much as digits as its factorization.

102540307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323788.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 102540307 is about 10126.2187908419. The cubic root of 102540307 is about 468.0564177608.

Adding to 102540307 its reverse (703045201), we get a palindrome (805585508).

The spelling of 102540307 in words is "one hundred two million, five hundred forty thousand, three hundred seven".