102042005 has 16 divisors (see below), whose sum is σ = 133843584. Its totient is φ = 74226240.

The previous prime is 102042001. The next prime is 102042011. The reversal of 102042005 is 500240201.

It is not a de Polignac number, because 102042005 - 2² = 102042001 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 (102042001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7361 + ... + 16070.

It is an arithmetic number, because the mean of its divisors is an integer number (8365224).

Almost surely, 2^102042005 is an apocalyptic number.

It is an amenable number.

102042005 is a deficient number, since it is larger than the sum of its proper divisors (31801579).

102042005 is a wasteful number, since it uses less digits than its factorization.

102042005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23516.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 102042005 is about 10101.5842816857. The cubic root of 102042005 is about 467.2970016700.

Adding to 102042005 its reverse (500240201), we get a palindrome (602282206).

The spelling of 102042005 in words is "one hundred two million, forty-two thousand, five".