103142281 has 16 divisors (see below), whose sum is σ = 124322688. Its totient is φ = 84409600.

The previous prime is 103142227. The next prime is 103142323. The reversal of 103142281 is 182241301.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-103142281 is a prime.

It is a super-2 number, since 2×103142281² = 21276660259765922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103142381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7690 + ... + 16291.

It is an arithmetic number, because the mean of its divisors is an integer number (7770168).

Almost surely, 2^103142281 is an apocalyptic number.

103142281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

103142281 is a deficient number, since it is larger than the sum of its proper divisors (21180407).

103142281 is a wasteful number, since it uses less digits than its factorization.

103142281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24032.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 103142281 is about 10155.8988277749. The cubic root of 103142281 is about 468.9705565688.

Adding to 103142281 its reverse (182241301), we get a palindrome (285383582).

The spelling of 103142281 in words is "one hundred three million, one hundred forty-two thousand, two hundred eighty-one".