102745822 has 4 divisors (see below), whose sum is σ = 154118736. Its totient is φ = 51372910.

The previous prime is 102745801. The next prime is 102745823. The reversal of 102745822 is 228547201.

It is a happy number.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102745823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25686454 + ... + 25686457.

It is an arithmetic number, because the mean of its divisors is an integer number (38529684).

Almost surely, 2^102745822 is an apocalyptic number.

102745822 is a deficient number, since it is larger than the sum of its proper divisors (51372914).

102745822 is an equidigital number, since it uses as much as digits as its factorization.

102745822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51372913.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 102745822 is about 10136.3613787197. The cubic root of 102745822 is about 468.3689076318.

The spelling of 102745822 in words is "one hundred two million, seven hundred forty-five thousand, eight hundred twenty-two".