102540007 has 4 divisors (see below), whose sum is σ = 102632440. Its totient is φ = 102447576.

The previous prime is 102539999. The next prime is 102540019. The reversal of 102540007 is 700045201.

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

It is a cyclic number.

It is not a de Polignac number, because 102540007 - 2³ = 102539999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102540047) 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, 44532 + ... + 46777.

It is an arithmetic number, because the mean of its divisors is an integer number (25658110).

Almost surely, 2^102540007 is an apocalyptic number.

102540007 is a deficient number, since it is larger than the sum of its proper divisors (92433).

102540007 is an equidigital number, since it uses as much as digits as its factorization.

102540007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92432.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 102540007 is about 10126.2039777994. The cubic root of 102540007 is about 468.0559612995.

Adding to 102540007 its reverse (700045201), we get a palindrome (802585208).

The spelling of 102540007 in words is "one hundred two million, five hundred forty thousand, seven".