10142805 has 16 divisors (see below), whose sum is σ = 16398144. Its totient is φ = 5352960.

The previous prime is 10142801. The next prime is 10142807. The reversal of 10142805 is 50824101.

It is not a de Polignac number, because 10142805 - 2² = 10142801 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10142801) 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, 2031 + ... + 4940.

It is an arithmetic number, because the mean of its divisors is an integer number (1024884).

Almost surely, 2^10142805 is an apocalyptic number.

10142805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10142805 is a deficient number, since it is larger than the sum of its proper divisors (6255339).

10142805 is an equidigital number, since it uses as much as digits as its factorization.

10142805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7076.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 10142805 is about 3184.7770722611. Note that the first 3 decimals coincide. The cubic root of 10142805 is about 216.4641724143.

Adding to 10142805 its reverse (50824101), we get a palindrome (60966906).

The spelling of 10142805 in words is "ten million, one hundred forty-two thousand, eight hundred five".