102492947 has 4 divisors (see below), whose sum is σ = 104673696. Its totient is φ = 100312200.

The previous prime is 102492919. The next prime is 102492953. The reversal of 102492947 is 749294201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749294201 = 631 ⋅1187471.

It is a cyclic number.

It is not a de Polignac number, because 102492947 - 2¹⁸ = 102230803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102492947.

It is not an unprimeable number, because it can be changed into a prime (102492917) 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, 1090304 + ... + 1090397.

It is an arithmetic number, because the mean of its divisors is an integer number (26168424).

Almost surely, 2^102492947 is an apocalyptic number.

102492947 is a deficient number, since it is larger than the sum of its proper divisors (2180749).

102492947 is an equidigital number, since it uses as much as digits as its factorization.

102492947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180748.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 102492947 is about 10123.8800368238. The cubic root of 102492947 is about 467.9843467017.

The spelling of 102492947 in words is "one hundred two million, four hundred ninety-two thousand, nine hundred forty-seven".