103240161 has 6 divisors (see below), whose sum is σ = 149124690. Its totient is φ = 68826768.

The previous prime is 103240141. The next prime is 103240171. The reversal of 103240161 is 161042301.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 101123136 + 2117025 = 10056^2 + 1455^2 .

It is not a de Polignac number, because 103240161 - 2⁶ = 103240097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (103240141) 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 5 ways as a sum of consecutive naturals, for example, 5735556 + ... + 5735573.

It is an arithmetic number, because the mean of its divisors is an integer number (24854115).

Almost surely, 2^103240161 is an apocalyptic number.

It is an amenable number.

103240161 is a deficient number, since it is larger than the sum of its proper divisors (45884529).

103240161 is a wasteful number, since it uses less digits than its factorization.

103240161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11471135 (or 11471132 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 103240161 is about 10160.7165593771. The cubic root of 103240161 is about 469.1188576179.

Adding to 103240161 its reverse (161042301), we get a palindrome (264282462).

The spelling of 103240161 in words is "one hundred three million, two hundred forty thousand, one hundred sixty-one".