102428243 has 4 divisors (see below), whose sum is σ = 102817968. Its totient is φ = 102038520.

The previous prime is 102428237. The next prime is 102428251. The reversal of 102428243 is 342824201.

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 102428243 - 2¹⁶ = 102362707 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (102425243) 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, 194468 + ... + 194993.

It is an arithmetic number, because the mean of its divisors is an integer number (25704492).

Almost surely, 2^102428243 is an apocalyptic number.

102428243 is a deficient number, since it is larger than the sum of its proper divisors (389725).

102428243 is an equidigital number, since it uses as much as digits as its factorization.

102428243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389724.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 102428243 is about 10120.6839195778. The cubic root of 102428243 is about 467.8858461566.

The spelling of 102428243 in words is "one hundred two million, four hundred twenty-eight thousand, two hundred forty-three".