102428017 has 4 divisors (see below), whose sum is σ = 102574836. Its totient is φ = 102281200.

The previous prime is 102427961. The next prime is 102428033. The reversal of 102428017 is 710824201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 710824201 = 83 ⋅8564147.

It can be written as a sum of positive squares in 2 ways, for example, as 87030241 + 15397776 = 9329^2 + 3924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102428017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102427982 and 102428000.

It is not an unprimeable number, because it can be changed into a prime (102428047) 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, 72358 + ... + 73759.

It is an arithmetic number, because the mean of its divisors is an integer number (25643709).

Almost surely, 2^102428017 is an apocalyptic number.

It is an amenable number.

102428017 is a deficient number, since it is larger than the sum of its proper divisors (146819).

102428017 is an equidigital number, since it uses as much as digits as its factorization.

102428017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146818.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 102428017 is about 10120.6727543183. The cubic root of 102428017 is about 467.8855020384.

The spelling of 102428017 in words is "one hundred two million, four hundred twenty-eight thousand, seventeen".